Skip to main content
U.S. flag

An official website of the United States government

May 3, 2023 — HVO geologist samples tephra deposits in Halema‘uma‘u, Kīlauea summit

Detailed Description

On Wednesday May 3, HVO geologists visited the northwestern wall of Halema‘uma‘u crater to sample older ash beds and lava flows exposed by the caldera collapse in 2018. Here, one of the geologists is collecting ash samples while standing on a large pile of rockfall debris that mantles the crater wall. USGS image by M. Zoeller. 


Public Domain.