Government Hill Repeat Photo
Detailed Description
In these two images, top from 1964 (W.R. Hansen, USGS) and bottom from November 18, 2013 (Game McGimsey, AVO/USGS), note how the general shape and trend of the 1964 subsidence trough, or graben, is still visible nearly 50 years later.
Sources/Usage
Public Domain.
U.S. Geological Survey