Ground view from volcanic ridge, dark volcanic flows.

Ground-based view of flow field with smooth and rough textures with sand in some low areas.

Ground-based photo taken from cone slope of flow field with distinct ridges and sand accumulated on much of the field. Vehicle tracks can be seen in the center and on the right of the image.

Ground-based view of cone breach from within crater.

Ground-based view of crater floor with nested conelet and breach, viewed from outer cone rim, with lighter-colored sand in some low areas within the crater.

Ground-based view of crater floor with nested conelet as viewed from from outer cone rim, with lighter-colored sand within the conelet.

Ground-based view of flow field with cone and crater in distance, mountains in far distance. Sand accumulations can be seen throughout the flow field. Larger accumulation at bottom of photo shows ripples. Circular vent can be seen in middle.

Ground-based view of lava flow. Cone and crater with breach can be seen in background. Channel can be seen in middle distance at right. Sand can be seen covering units in middle distance, and in cracks in foreground.

Ground-based view of lava flow. Cone and crater with breach can be seen in background. Channel can be seen in middle distance at right. Sand can be seen covering units in middle distance, and in cracks in foreground.

Ground-based photo taken from cone slope of flow field with distinct ridges with sand accumulated on much of the field. Vehicle tracks can be seen in the center and on the right of the image

Ground-based view of lava flow with ridge in foreground.

Ground-based view of lava flow with cone and crater with breach.

Ground-based view from cone of flow field with differences in sand accumulation.

Ground-based view from cone of flow field.

Ground-based view from cone of flow field.

Ground-based view of flow field showing hummocky terrain and windblown sand in low areas. Pressure ridge in distance, larger mountain range in far distance.

Ground-based view of flow field. Mountains in far distance, cone and crater in background. Circular vents and other depression features are in middle distance. Desert pavement seen throughout, with basalt bedrock, basalt gravel, and windblown sand forming desert pavement surface.

Ground-based view of flow field with large vent crater in middle distance. Basalt bedrock, basalt gravel, and windblown sand form desert pavement surface.

Ground-based view of flow field. Mountains in far distance, cone and crater in background. Circular vents and other depression features are in middle distance. Desert pavement seen throughout, with basalt bedrock, basalt gravel, and windblown sand forming desert pavement surface.

Ground-based view of ridge and flow field. Lower areas covered with windblown sand.

Ground-based view from cone of flow field. Vehicle tracks can be seen in the sand accumulated on flow field.

Oblique aerial view of flow field with cone and crater in foreground.

Oblique aerial view of flow field with collapse features in foreground with sand accumulated in lower areas. Cone with crater and wind streak is in background.

Oblique aerial view of flow field with collapse features in foreground with sand accumulated in lower areas. Cone with crater and wind streak is in background.

Oblique aerial view of flow field with collapse features, wind streak, and cone with crater and part of aircraft.

Oblique aerial view of flow field with collapse features, wind streak, and cone with crater and part of aircraft wing.

Oblique aerial view of flow field with cone with crater and wind streak in foreground, vent lava lake area in background.

Oblique aerial view of flow field with wind streak, and cone with crater and part of aircraft wing.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with collapse fractures in vent lava lake plateau, wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater and part of aircraft wing.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater and part of aircraft wing.

Oblique aerial view of flow field with channels, collapse features, wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone slope.

Oblique aerial view of flow field with cone and crater.

Oblique aerial view of flow field with wind streak, and cone slope.

Oblique aerial view of flow field with cone and crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of flow field with wind streak, and cone with crater.

Oblique aerial view of cone, nested conelets, and cone breach.

Oblique aerial view of cone, nested conelets, and cone breach.

Oblique aerial view of rim of cone with crater and flow field.

Oblique aerial view of cone, nested conelets, and cone breach.

Oblique aerial view of rim and slope of crater, with water erosion features and hiking paths. Flow field with vehicle tracks and area of sand accumulation can be seen at top left. Vehicle can be seen at base of hiking path.

Oblique aerial view of flow field with flow lobe and collapse features with sand in low areas. Field site, vehicle tracks, and two small craters can be seen at edge of flow lobe.

Low oblique aerial view of rim and slope of crater, with water erosion features and hiking paths. Flow field in background. Crater breach is visible. Vehicle can be seen at base of hiking path.

Oblique aerial view of cone and crater, with breach, nested conelets, and sand accumulations within visible. Wind streak can be seen in contrast with areas of sand accumulation. Crater slope shows water erosion features.

Oblique aerial view of cone, crater, and wind streak. Collapse features in flow and areas of sand accumulation are visible.

Oblique aerial view of cone, crater, and wind streak. Collapse features in flow and areas of sand accumulation are visible.

Oblique aerial view of cone, crater, and wind streak. Collapse features in flow and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with tension fractures, large depression, and pyramidal structures. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of cone, crater, and wind streak. Collapse features in flow and areas of sand accumulation are visible. Valley floor is visible in background and mountains in far distance.

Oblique aerial view of cone, crater, and wind streak. Collapse features in flow and areas of sand accumulation are visible. Valley floor is visible in background and mountains in far distance.

Oblique aerial view of cone, crater, and windstreak. Vent lava plateau area with tension fractures, collapse features, and pyramidal structures at bottom. Surfaces swept clean of sand as well as areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, and tension fractures. Surfaces swept clean of sand as well as areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, and tension fractures. Surfaces swept clean of sand as well as areas of sand accumulation are visible.

Oblique aerial view of cone, crater, wind streak, and lava field and aircraft structure. Valley floor can be seen in far distance.

Oblique aerial view of vent lava plateau area with craters, tumuli, and tension fractures. Surfaces swept clean of sand as well as areas of sand accumulation are visible.

Oblique aerial view of cone, crater, wind streak, and lava field and aircraft structure.

Oblique aerial view of cone, crater, wind streak, and lava field and aircraft structure.

Oblique aerial view of cone, crater, wind streak, and lava field.

Oblique aerial view of edge of lava flow with collapse features, flat valley floor, and highway leading off to mountains in distance.

Oblique aerial view of flow field with cone, crater, and wind streak.

Oblique aerial view of flow field with cone with crater and wind streak in foreground, vent lava lake area in background.

Oblique aerial view of flow with collapse features and tension fractures. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with large tension fractures and tumulus. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with crater, tumuli, and tension fractures. Areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with crater, tumuli, and tension fractures. Areas of sand accumulation are visible.

Oblique aerial view of vent lava crater. Areas of sand accumulation are visible near vegetation and crater rim.

Oblique aerial view of vent lava area with tumulus and tension fractures. Areas of sand accumulation are visible.

Oblique aerial view of rough flow area with collapse features. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters and tension fractures. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with tumuli and tension fractures. Areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with tumuli and tension fractures. Areas of sand accumulation are visible.

Oblique aerial view of smooth landscape with sand accumulations around vegetation.

Oblique aerial view of vent lava plateau area with crater, tumulus, and tension fractures. Flow field with collapse features can be seen in background. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of crater rim.

Oblique aerial view of volcanic crater in foreground, smaller craters in background.

Oblique aerial view of volcanic crater in foreground, smaller craters in background.

Oblique aerial view of arcuate trough in volcanic flow, sand fills depression.

Oblique aerial view of linear trough in volcanic flow.

Oblique aerial view of volcanic crater.

Oblique aerial view of eroded volcanic flow margin.

Oblique aerial view of possible fluvial erosion through volcanic flow.

Oblique aerial view of volcanic crater rim.

Oblique aerial view of volcanic dome.

Oblique aerial view of smooth volcanic plains, with erosion flow to the upper left of image, and linear fractures to the upper right.

Oblique aerial view of volcanic plains with shallow depressions and eroded edges.

Oblique aerial view of shallow, eroded volcanic crater, linear depressions to upper right of image.

Oblique aerial view of small, shallow, eroded volcanic craters, linear depressions to upper right of image.

Oblique aerial view of volcanic dome in volcanic plain, arcuate depression across top of image.

Oblique aerial view of shallow volcanic crater on volcanic plateau, small domes to the upper right of feature.

Oblique aerial view of volcanic crater on slope of volcanic plain, eroded flow margin in foreground.

Oblique aerial view of volcanic crater on slope of volcanic plain, eroded flow margin in foreground.

Low oblique aerial view of Amboy Crater, feature viewed in profile, volcanic flows and plateau in the foreground.

Low oblique aerial view of Amboy Crater, feature viewed in profile, volcanic flows and plateau in the foreground.

Oblique aerial view of desert plains surrounding Amboy Crater volcanic flows, eroded edge of flow visible in foreground.

Oblique aerial view of Amboy Crater with surrounding volcanic flows.

Oblique aerial view of Amboy Crater with volcanic flows, desert visible to right side of image.

Oblique aerial view of Amboy Crater with surrounding volcanic flows, Amboy is partially obscured by airplane wing.

Oblique aerial view of lobate volcanic flow.

Oblique aerial view of lower flank of Amboy Crater and eroded flow.

Oblique aerial view of Amboy Crater, interior of crater is partially visible, eroded lobate flows are in the background.

Oblique aerial view of Amboy Crater flank and surrounding volcanic flows.

Low oblique aerial view of volcanic plateau and arcuate fractures.

Oblique aerial view of collapse features with sand in low areas. Unpaved road can be seen cutting across smoother terrain.

Oblique aerial view of collapse features with sand in low areas. Cone with crater and wind streaks can be seen at top of photo.

Oblique aerial view of collapse features with sand in low areas. Unpaved road can be seen cutting across smoother terrain.

Oblique aerial view of flow field with cone and crater in foreground. Vent lava area can be seen in middle distance. Mountains in far distance. and aircraft structure.

Oblique aerial view of collapse features with sand in low areas. Unpaved road can be seen cutting across smoother terrain. Cone slope can be seen at top of photo.

Vertical aerial view of aircraft structure and collapse features with sand in low areas. Unpaved road can be seen cutting across smoother terrain.

Oblique aerial view of flow field with wind streak and cone with crater.

Oblique aerial view of flow field with collapse features with sand in low areas and aircraft structure.

Oblique aerial view of flow field with collapse features with sand in low areas and aircraft structure.

Oblique aerial view of flow field with collapse features with sand in low areas.

Oblique aerial view of flow field with collapse features with sand in low areas and wind streak boundary.

Oblique aerial view of flow field with collapse features with sand in low areas and wind streak boundary.

Oblique aerial view of flow field with collapse features with sand in low areas and wind streak boundary.

Oblique aerial view of flow field with wind streak and cone with crater and aircraft structure.

Oblique aerial view of flow field with rough textured lava and sand accumulations in low areas.

Oblique aerial view of flow field with collapse features with sand in low areas and wind streak boundary.

Oblique aerial view of flow field with rough textured lava and sand accumulations in low areas.

Vertical aerial view of collapse features with sand in low areas and possible tumulus.

Oblique aerial view of flow field with sand in low areas. Cone with crater in distance.

Oblique aerial view of flow field with collapse features and sand in low areas. Newer units can be seen over older, more eroded units. Desert floor with braided washes can be seen in top right corner of photo.

Oblique aerial view of flow field boundary and desert floor with several braided washes.

Oblique aerial view of flow field with collapse features with sand in low areas and aircraft structure.

Oblique aerial view of flow field with collapse features with sand in low areas. At top of image, flow boundary can be seen where it meets desert floor. Mountains in far distance and aircraft structure.

Oblique aerial view of flow field with collapse features and sand in low areas. Cone with crater in distance, mountains in far distance.

Oblique aerial view of flow field with collapse features and sand in low areas.

Oblique aerial view of flow field with flow lobe and collapse features with sand in low areas. Field site, vehicle tracks, and two small craters can be seen at edge of flow lobe.

Oblique aerial view of flow field with flow lobe and collapse features with sand in low areas. Field site, vehicle tracks, and two small craters can be seen at edge of flow lobe.

Oblique aerial view of flow field with flow lobe, collapse features with sand in low areas, and cone with crater and aircraft structure. Field site, vehicle tracks, and two small craters can be seen at edge of flow lobe.

Oblique aerial view of flow field with flow lobe, collapse features with sand in low areas, and cone with crater and aircraft structure. Field site, vehicle tracks, and two small craters can be seen at edge of flow lobe.

Oblique aerial view of flow field with flow lobe and collapse features with sand in low areas. Field site, vehicle tracks, and two small craters can be seen at edge of flow lobe.

Oblique aerial view of flow field with flow lobe and collapse features with sand in low areas. Field site, vehicle tracks, and two small craters can be seen at edge of flow lobe.

Oblique aerial view of flow field with flow lobe and collapse features with sand in low areas. Field site, vehicle tracks, and two small craters can be seen at edge of flow lobe.

Oblique aerial view of flow field with flow lobe and collapse features with sand in low areas. Field site, vehicle tracks, and two small craters can be seen at edge of flow lobe.

Oblique aerial view of flow field with flow lobe and collapse features with sand in low areas. Field site, vehicle tracks, and two small craters can be seen at edge of flow lobe.

Oblique aerial view of flow field with flow lobe, cone slope, and collapse features with sand in low areas.

Oblique aerial view of flow field with flow lobe, cone slope, and collapse features with sand in low areas.

Oblique aerial view of flow field with channels and cone slope.

Oblique aerial view of flow field with channels and cone slope.

Ground view of flow field with small craters.

Ground view of flow field with small craters.

Oblique low-altitude aerial photograph of the east end of Amboy flow field, showing the older platform units and circular “collapse” depressions. Flow edges are about 4-5 m high. Low areas are filled with wind-blown sand more than one meter thick in some areas.

Oblique aerial view of flow field with collapse features and vent lava lake areas.

Oblique aerial view of flow field with collapse features with sand in low areas.

Oblique aerial view of flow field with collapse features with sand in low areas.

Oblique aerial view of flow field with collapse features with sand in low areas.

Oblique aerial view of flow field with collapse features with sand in low areas.

Oblique aerial view of flow field with platform units with collapse features and aircraft structure.

Oblique aerial view of flow field with platform units with collapse features.

Oblique aerial view of flow field with platform units with collapse features.

Oblique aerial view of younger flow superposed on older flow. Sparse desert vegetation and vehicle tracks throughout on older units.

Oblique aerial view of smooth area of flow field and large trench.

Oblique aerial view of flow field with collapse features with sand in low areas.

Oblique aerial view of flow field with collapse features with sand in low areas in foreground, vent lava features in distance and aircraft structure.

Oblique aerial view of more eroded units in flow field.

Oblique aerial view of flow field with collapse features with sand in low areas.

Oblique aerial view of flow field with collapse features. Vehicle tracks can be seen in sand at bottom of photo. End of trench can be seen at right.

Oblique aerial view of vent lava plateau area with craters, tumuli, and tension fractures. Surfaces swept clean of sand as well as areas of sand accumulation are visible.

Low oblique aerial view of vent lava plateau area with craters, tension fractures, tumuli, and lava channels. Valley floor and mountains in far distance.

Low oblique aerial view of vent lava plateau with craters and tumuli in foreground, with cone in background and mountains in far distance. Aircraft structure visible at top of picture.

Oblique aerial view of vent lava plateau area with craters, tumuli, and lava channel and aircraft structure. Valley floor in background and mountains in far distance. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, tension fractures, pressure ridges, and lava channels, with cone in distance and aircraft structure. Areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, tension fractures, pressure ridges, and lava channels. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, tension fractures, and lava channels and aircraft structure. Areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, tension fractures, and pressure ridges. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, tension fractures, and pressure ridges and aircraft structure. Areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, tension fractures, and pressure ridges and aircraft structure. Areas of sand accumulation are visible.

Oblique aerial view of vent crater and tension fractures in relatively smooth area of flow. Areas of sand accumulation are visible.

Oblique aerial view of tumuli, tension fractures, and lava channel in relatively smooth area of flow. Areas of sand accumulation are visible.

Oblique aerial view of vent plateau area with craters, tumuli, tension fractures, and lava channel. Areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tension fractures, tumuli, and lava channels.

Oblique aerial view of vent lava plateau area with craters, tension fractures, tumuli, and lava channels.

Oblique aerial view of vent lava plateau area with craters, tension fractures, tumuli, and lava channels.

Oblique aerial view of vent lava plateau area with craters, tension fractures, tumuli, and lava channels.

Oblique aerial view of vent lava plateau area with craters, tumuli, tension fractures, and lava channels. Surfaces swept of sand and areas of sand accumulation are readily visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, and tension fractures, with cone in background and mountains in far distance. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, pressure ridge, tumuli, and lava channels. Surfaces swept of sand and areas of sand accumulation are readily visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, and tension fractures, with cone in background and mountains in far distance. Surfaces swept of sand and areas of sand accumulation are readily visible.

Oblique aerial view of vent lava plateau area with craters and lava channels. Sand accumulations in low areas are visible.

Oblique aerial view of vent lava plateau area with craters, lava channels, tumuli, and tension fractures. Sand accumulations in low areas are visible.

Oblique aerial view of vent lava plateau area with craters, lava channels, tumuli, and tension fractures. Sand accumulations in low areas are visible.

Oblique aerial view of vent lava plateau area with craters, lava channels, tumuli, and tension fractures. Sand accumulations in low areas are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, and tension fractures. Sand accumulations in low areas are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, and tension fractures. Sand accumulations in low areas are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, and tension fractures. Sand accumulations in low areas are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, pressure ridge, and tension fractures. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, lava channels, tumuli, and tension fractures, with cone in distance. Sand accumulations in low areas are visible.

Oblique aerial view of vent lava plateau area with craters, lava channels, tumuli, and tension fractures, with cone in distance. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, pressure ridges, and lava channel and aircraft structure. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tension fractures, pressure ridges, and lava channel. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tension fractures, pressure ridges, and lava channel. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, tension fractures, pressure ridges, and lava channel, with cone in distance. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of smooth flow area with tension fractures and tumuli. Areas of sand accumulation are visible in the lee of the tumuli and vegetation, as well as in the low areas of the tension fractures.

Oblique aerial view of smooth flow area with tension fractures and tumuli. Areas of sand accumulation are visible in the lee of the tumuli and vegetation, as well as in the low areas of the tension fractures.

Oblique aerial view of smooth flow area with tension fractures and tumuli. Areas of sand accumulation are visible in the lee of the tumuli and vegetation, as well as in the low areas of the tension fractures.

Oblique aerial view of smooth flow area with tension fractures and tumuli. Areas of sand accumulation are visible in the lee of the tumuli and vegetation.

Oblique aerial view of vent lava plateau area with craters, tumuli, tension fractures, and lava channel. Areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, tension fractures, and lava channel. Areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with craters, tumuli, and tension fractures. Areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with tumulus and tension fractures. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with tumulus and tension fractures. Areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with tumulus and tension fractures. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with tumulus and tension fractures, with smooth and rough flow areas. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of flow field with tension fractures and collapse features. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of flow field with tension fractures and collapse features with rough and smooth flow areas. Areas of sand accumulation are visible.

Oblique aerial view of flow field with tension fractures and collapse features with rough and smooth flow areas. Surfaces swept of sand and areas of sand accumulation are visible.

Low oblique aerial view of tongue-shaped volcanic flow between two volcanic ridges, surrounding volcanic flows visible beyond feature.

Low oblique aerial view of tongue-shaped volcanic flow between two volcanic ridges, surrounding volcanic flows visible beyond feature.

Low oblique aerial view of tongue-shaped volcanic flow between two volcanic ridges, surrounding volcanic flows visible beyond feature.

Low oblique aerial view of volcanic plateaus with arcuate fractures, surrounding lobate volcanic flows.

Low oblique aerial view of raised volcanic flows with circular depression and linear fractures, lobate volcanic flows in foreground.

Ground-based view of tongue-shaped volcanic flow lobe, volcanic ridge in background.

Ground-based view of tongue-shaped volcanic flow lobe, volcanic ridge in background.

Ground-based view of tongue-shaped volcanic flow lobe, volcanic ridge in background.

Ground-based view of tongue-shaped volcanic flow lobe, volcanic ridge in background – similar to image 27A.

Oblique aerial view of vent lava plateau area with tension fractures, large crater/depression and pyramidal structures. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with tension fractures, large crater/depression and pyramidal structures. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with tension fractures, large crater/depression and pyramidal structures. Surfaces swept of sand and areas of sand accumulation are visible.

Low oblique aerial view of vent lava plateau area with tension fractures, large depression, and pyramidal structures. Surfaces swept of sand and areas of sand accumulation are visible.

Low oblique aerial view of vent lava plateau area with tension fractures, large depression, and pyramidal structures. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with tension fractures, large crater/depression and pyramidal structures. Surfaces swept of sand and areas of sand accumulation are visible.

Low oblique aerial view of vent lava plateau area with tension fractures, large depression, and pyramidal structures. Surfaces swept of sand and areas of sand accumulation are visible.

Low oblique aerial view of raised volcanic flows with circular depression and linear fractures.

Low oblique aerial view of raised volcanic flows with circular depression and linear fractures.

Low oblique aerial view of raised volcanic flows with circular depression and linear fractures.

Low oblique aerial view of raised volcanic flows with circular depression and linear fractures.

Oblique aerial view of smooth and rough flow areas, tensional fractures, and collapse features. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of smooth and rough flow areas, tensional fractures, and collapse features. Surfaces swept of sand and areas of sand accumulation are visible.

Oblique aerial view of flow field with tension fractures and collapse features with smooth flow areas. Areas of sand accumulation are visible.

Oblique aerial view of vent lava plateau area with tension fractures, large crater/depression, and rough and smooth flow areas. Areas of sand accumulation are visible.

Ground view close-up: blocks of scoria, pen for scale.

Ground view close-up: blocks of scoria, pen for scale.

Ground view close-up: blocks of scoria, pen for scale.

Ground view close-up: blocks of scoria, pen for scale.

Ground view close-up: blocks of scoria (no scale).

Ground view close-up: blocks of scoria with ventifacts, rock hammer for scale.

Ground view close-up: blocks of scoria, ruler for scale.

Ground view close-up: blocks of scoria, ruler for scale.

Ground view close-up: blocks of scoria, ruler for scale.

Ground view close-up: blocks of scoria, pen for scale.

Ground view close-up: blocks of scoria, rock hammer for scale.

Ground view close-up: blocks of scoria, ruler for scale.

Ground view close-up: blocks of scoria, hammer for scale.

Ground view close-up: blocks of scoria, rock hammer for scale.

Ground view close-up: blocks of scoria, rock hammer for scale.

Ground view close-up: blocks of scoria, rock hammer for scale.

Ground view close-up: blocks of scoria, ruler for scale.