New assess. of U.S. volcano threats point to monitoring improvements

New assessment of U.S. volcano threats points to needed monitoring ...

Detailed Description

Explosion column from Halemaumau, Kīlauea, on May 13, 1924, at 0935. Photo by Oliver Emerson, taken from near Kīlauea Military Camp.


Image Dimensions: 277 x 350

Date Taken: