Glacier Features: Icefalls

Icefalls often happen when glaciers flow over a steep drop or squeeze through narrow places. That portion of glacier ice flows faster and becomes heavily crevassed.

Historic photograph of Cowlitz Glacier, Washington state, 1960This 1960 photograph shows Cowlitz Glacier's icefall as it flows down the steep flank of Mount Rainier in Washington state. —Credit: Photograph by Austin Post. 1960. Cowlitz Glacier: From the Glacier Photograph Collection. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media.

Historic photograph of Payallup Glacier, Washington state, 1960Puyallup Glacier, located on the steep slopes of Mount Rainier in Washington state, features several icefalls. —Credit: Photograph by Austin Post. 1960. Puyallup Glacier: From the Glacier Photograph Collection. Boulder, Colorado USA: National Snow and Ice Data Center. Digital media.

Satellite image of Lambert Glacier, AntarcticaThis image from the Landsat 7 satellite shows an icefall that feeds into the Lambert Glacier from the East Antarctic Ice Sheet. —Credit: NASA and USGS