Limestone and marble underground formations in Oregon Caves National Monument

Limestone and marble underground formations  in Oregon Caves National Monument.  Eons of acidified groundwater have slowly etched away at marble, creating the extensive and intricate cave formations in Oregon Caves National Monument. USA, natural history stock photograph, photo id 25861
Limestone and marble underground formations in Oregon Caves National Monument. Eons of acidified groundwater have slowly etched away at marble, creating the extensive and intricate cave formations in Oregon Caves National Monument. USA

Location: Oregon Caves National Monument
Image ID: 25861
Format: Digital 2:3
Copyright ©Phillip Colla, all rights reserved worldwide.
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