PRINCE WILLIAM SOUND EARTHQUAKE, MARCH 28, 1964

Government Hill Landslide, Anchorage, Alaska

[LANDSLIDES] The Government Hill Elementary school in Anchorage was torn apart by subsidence of the graben at the head of the Government Hill landslide. The south wing of the school dropped about 30 feet (9 m); the east wind split lengthwise and collapsed. The playground became a chaotic mass of blocks and fissures. Part of this slide became an earthflow that spread 150 feet (45.5 m) across the flats into the Alaska Railroad yards. During the earthquake, the shaking loosened clay beneath Government Hill and the clay began to move toward the flats. On the hill, 400 feet (121.2 m) back from the rim of the bluff, the earth cracked on a front 1,180 feet (357.6 m) wide. Photograph Credit: U.S. Geological Survey, Menlo Park, CA.