All photographs copyright (2003-2013) by Kris H. Light

Alum Cave smells like gunpowder due to the minerals found in the rock. It is dry as a bone because the overhanging cliff doesn't allow any rainfall to reach underneath. Some of the minerals include: potash alum, epsomite, melanterite and apjohnite. We ...
Alum Cave smells like gunpowder due to the minerals found in the rock. It is dry as a bone because the overhanging cliff doesn't allow any rainfall to reach underneath. Some of the minerals include: potash alum, epsomite, melanterite and apjohnite. We were in the clouds during much of our hike.

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