May 4 – 27, 1989
Austin Post and Robert Krimmel made these photographs before, during and after the May 18, 1980, eruption of Mt. St. Helens for the U.S.G.S. (United States Geologic Survey.
Austin Post and Robert Krimmel made these photographs before, during and after the May 18, 1980, eruption of Mt. St. Helens for the U.S.G.S. (United States Geologic Survey.