Rocks - Atlas Obscura

591 Items Tagged



6 Ways To See Texas Below the Surface

How to explore the state’s caves, caverns, and fascinating geology.
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.
Tonopah Mining Park.

10 Places to Experience Nevada’s Extraordinary Geological Gems

From active opal mines to mind-boggling natural sand art.