Crater of Castle Geyser, Firehole Basin. Yellowstone National Park, Wyoming. 1871.

Album caption: Castle Geyser, Fire Hole Basin, Hot Spring Series. Handwritten notes on album caption: 295. New neg. no. 57-HS-109 USGS in National Archives. Crater of. 1871. Descriptive Catalog of the Photographs of the United States Geological Survey of the Territories, W. H. Jackson, Photographer, Second Edition, Illustrated, 1871 Series, page 31, No. 295: Crater of Castle Geyser. A view from the riverside. Here we see the peculiar crystallization of the silica in large globular masses, like spongiform corals, and running off into the usual exquisite bead-work to the laminated base. The entire mound is about forty feet in height. On the right, close to its base, is a small but very active and turbulent little geyser, probably [...]