This is a picture of “cave bacon” from Soldier’s Cave in King’s Canyon National Park. There is a light shining through the thin rock. Note the little drop of water at the bottom of the blade! Cave bacon is formed when a thin stream of water dribbles down the edge and slowly leaves deposits over a very long time. In the end you get thin ribbon-like blade formations of minerals. This happens in limestone caves. See caves and mountain photos for more like this.
I spent many years exploring the caves of King’s Canyon and Sequoia National Park, in California.
This post is for the weekly photo challenge: Details