Uploaded May 2025 | Updated September 2026, 1 week ago

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Near Mammoth Lakes, California, Devil’s Postpile is a mind-blowing natural formation of perfectly shaped basalt columns. Formed by cooling lava and sculpted by glaciers, this geologic wonder looks like nature’s version of LEGO bricks. Learn how these hexagonal columns formed in one of California’s most unique national monuments!

#DevilsPostpile #GeologyFacts #EasternSierra #CaliforniaTravel #NatureWonders #Shorts #NationalMonuments #LavaRocks #GeologyShorts #CactusAtlas

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Welcome to the Cactus Atlas! We are Glenn and Amy and invite you to join us as we visit all sorts of locations across the American West. We tour both natural and man-made attractions.

Our base of operations is in the Phoenix, AZ area. We do a lot of hiking, day trips, and campground reviews and hope that we will be a great resource if you are planning a trip to the American West. We also hope to delight you with our exciting adventures!