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July 17th 2009 North America » United States » Montana » Lewis and Clark Caverns
This is called popcorn. It grows on the walls of the cavern and is formed by the water pushing through the walls slowly and become what is seen here. It is better than a 1/4 mile up hill walk jus ... 5 photos [full story]
This is called popcorn. It grows on the walls of the cavern and is formed by the water pushing through the walls slowly and become what is seen here. It is better than a 1/4 mile up hill walk jus ... 5 photos [full story]
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