Close aerial view of a shatter ring on the Lost Jim lava flow. Shatter rings form over active lava tubes due to fluctuations in discharge, which causes the lava tube roof to flex repeatedly up and down.

Close aerial view of a shatter ring on the Lost Jim lava flow. Shatter rings form over active lava tubes due to fluctuations in discharge, which causes the lava tube roof to flex repeatedly up and down.

Date: Jun 28th, 2021
Volcano(es): Imuruk Lake Volc Field
Photographer: Orr, Tim
URL: avo.alaska.edu/image/view/178701
Credit: Image courtesy of AVO/USGS.
Use Restriction: Please cite the photographer and the Alaska Volcano Observatory / U.S. Geological Survey when using this image.
Full Resolution.