Skip to main content
U.S. flag

An official website of the United States government

Special Earthquakes, Earthquake Sequences, and Fault Zones

By Earthquake Hazards Program

Compilations of information for selected significant earthquakes.

Collapse of Fourth Avenue near C Street, Anchorage
Collapse of Fourth Avenue near C Street, Anchorage, due to earthquake caused landslide. Before the earthquake, the sidewalk at left, which is in the graben, was at street level on the right. The graben subsides 11 feet in response to 14 feet of horizontal movement. Anchorage district, Cook Inlet region, Alaska. 1964.Photos from the Earth Science Photographs from the U.S. Geological Survey Library, by Joseph K. McGregor and Carl Abston, U.S. Geological Survey Digital Data Series DDS-21, 1995. (Public domain.)