Glacier Features: Glacier Caves

Glacier caves form within the ice of a glacier. Glacier caves are often carved out by water running through or under the glacier's ice.

Photograph of an ice cave in Mendenhall Glacier, Alaska, 1991This glacier cave under Mendenhall Glacier, Alaska, was photographed in 1991. —Credit: Photograph by John Borniak, NOAA Corps., National Oceanic and Atmospheric Administration/Department of Commerce.

Photograph of an ice cave in Mendenhall Glacier, Alaska, 1991This glacier cave under Mendenhall Glacier, Alaska, was photographed in 1991. —Credit: Photograph by John Borniak, NOAA Corps., National Oceanic and Atmospheric Administration/Department of Commerce.

Photograph of Ectomorph Ice Cave in Oregon, United StatesIn contrast to glacier caves, ice caves occur when ice exists year-round within bedrock caves. Ectomorph Ice Cave in Oregon is a lava cave with perennial ice. —Credit: Brent McGregor and Eduardo Cartaya

Last updated: 16 March 2020