This series of images from June 13 through July 7, 2018, show dramatic down-dropping of part of Kīlauea Volcano's summit caldera
floor. For weeks, the summit has subsided in both a continuous fashion, as well as in incremental, jolting drops. The withdrawal of magma
from the summit reduces pressure in the shallow magma reservoir
. When this reduction becomes too great, rock that forms the floor of Halema‘uma‘u and parts of the surrounding Kīlauea caldera floor slump into the shallow magma reservoir to generate a collapse/explosion event. These events occur about every 24-32 hours. This view, from the Keanakāko‘i Overlook, is toward the north, across the caldera floor.