Crater lake of Herbert Volcano, Central Aleutians. View from the South-East. Hydrothermally active area is visible in the lower right corner of the photograph. Photo taken during the 2014 field season of the Islands of Four Mountains multidisciplinary project, work funded by the National Science Foundation, the USGS/AVO, and the Keck Geology Consortium.
Credit: Image courtesy of the AVO/UAF-GI.