USGS
Hawaiian Volcano 
Observatory

Photo Information


Northwest caldera wall of Kilauea caldera
Photograph by S.R. Brantley on August 14, 1998

View is from the northwest caldera rim atop Uwekahuna Bluff toward the south-southwest. Halema`uma`u is in upper left.

Deep cracks and fractures near the caldera rim (foreground) are evidence of the instability of the caldera walls as a consequence of the formation of the caldera. Many such cracks occur within 10-20 m of the rim, and several recent magnitude 6+ earthquakes have shaken loose sections of the caldera walls. On a larger scale of collapse, the stairstep pattern of the caldera wall (middle distance) represents large blocks that subsided during formation of the caldera. See image #6 for other large blocks of the caldera wall that collapsed during and after the caldera formed.

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15 September 1998