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Turnagain Heights landslide, Anchorage

1964 (approx.)

Detailed Description

The Turnagain Heights landslide in Anchorage occurred along a steep bluff fronting Knik Arm of Cook Inlet. Its length, which was parallel to the bluff, was about one and half miles; its width was about a quarter to half a mile. This landslide reduced to rubble many of the finer homes of the city of Anchorage. Failure here, and in the "L" Street, Fourth Avenue, and Government Hill landslides in Anchorage, Alaska occurred on horizontal or near-horizontal slip surfaces in the Bootlegger Cove Clay, a marine silt of Pleistocene age.


Public Domain.