In 1965, south central Alaska was rocked by North America's greatest earthquake. (At 8.3-8.5 on the Richter scale, it released over twice the energy of the 1906 San Francisco earthquake.) Its epicenter was near Price William Sound, along a 1,000 km thrust fault where the Pacific plate subducts under the North american plate. The earthquake tilted at least 120,000 sq km. Some landmasses were thrust up locally as high as 25 m; elsewhere land sank as much as 2.5m. The shock was felt over almost 1,300,000 sq km. Extensive coastal damage resulted from submarine landslides and tsunamis which caused 122 of the 131 deaths. Property damage cost was about $311 million. Tsunami damage reached Crescent City, Calif. Tens of thousands of aftershocks indicated that the region of faulting extended about 1,000 km.