Geography Photographs: Volcanoes: More Siliceous sinter, geyserite

geyserite

Devil's Home, Wai-O-Tapu, New Zealand

geyserite

Hverir, Iceland

deyserite

Primrose Terrace, Wai-O-Tapu, New Zealand

geyserite

Upper Geyser Basin, Yellowstone NP, USA