Photo of the Day

cavers in orange jumpsuits climbing through enormous underground crystals in a cave
October 18, 2020

Cave of Crystals

Massive beams of selenite dwarf explorers in Mexico's Cave of Crystals, deep below the Chihuahuan Desert. Formed over millennia, these crystals are among the largest yet discovered on Earth.
Photograph by Carsten Peter, Nat Geo Image Collection

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