Glacier Features: Ice Caves

Ice Cavern in AntarcticaIce Cavern in Antarctica. Photograph originally published in "The Heart of the Antarctic," Volume I, by E. H. Shackleton, 1909. —Source: National Oceanic and Atmospheric Administration / Department of Commerce.

Ice cave under Mendenhall Glacier, 1991Ice cave under Mendenhall Glacier, 1991. —Source: National Oceanic and Atmospheric Administration / Department of Commerce. Photograph by Commander John Bortniak, NOAA Corps.

Ice cave under Mendenhall Glacier, 1991Ice cave under Mendenhall Glacier, 1991. —Source: National Oceanic and Atmospheric Administration / Department of Commerce. Photograph by Commander John Bortniak, NOAA Corps.

Tunnel in Angel Glacier, CanadaTunnel in Angel Glacier, Canada. This tunnel extends at least 100 meters into Angel Glacier. —Source: Tom Lowell's Glacier Image Database, University of Cincinnati. Photograph by Doug McVey.

Ice cave, IcelandIce cave in Iceland. —Source: Tom Lowell's Glacier Image Database, University of Cincinnati.