KÄ«lauea Volcano’s most recent summit collapse occurred at 8:00 a.m. HST today (July 31). South Sulphur Bank, a cliff of altered, light-colored rock now more than 80 m (260 ft) high, is visible on the far caldera wall. Another area of altered rock that’s being exposed as part of the caldera floor drops is visible near the center of this image. Photo taken Tuesday, July 31, 2018 courtesy of U.S. Geological Survey