HVO geologists conducted gas mapping mission—Kīlauea summit

HVO geologists conducted a gas mapping mission on the down-dropped block that subsided during the 2018 collapses at Kīlauea summit. The cliff face that covers much of the image formed during successive collapse events in 2018 as the foreground subsided. The 2018 cliff in this area is about 100 meters (330 feet) high. The two HVO geologists can be seen as tiny spots in the lower left portion of the photo, in the steaming area, giving a sense of the scale of the cliff. USGS photo by M. Patrick, taken on July 22, 2021.