Caves - Atlas Obscura

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Each cave’s beautiful decoration can tell us something about the world that came before us.

How to Decode a Cave

Below California’s surface lies a series of caves that can teach us a lot about our natural world—and its history.
Big Balanced Rock stuns along the Heart of Rocks Loop near Wilcox, AZ.

A Guide to Arizona’s Most Striking Natural Wonders

A journey through underground lava caves, enormous balancing rocks, and breathtaking canyons.