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Mexico’s Deadliest Cave Is Also One Of Its Most Spectacular

The stunning cave in Naica, Mexico, is home to some of the largest crystals on Earth, but harsh conditions can kill those who stay too long.
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Ancient poop from Cave of Dead Children in Mexico is ‘biological time capsule'

In the late 1950s, archaeologists discovered a cave in the Rio Zape Valley of Mexico. There were ancient human remains in the cave dated to between 660 and 1430 A.D., many of which belonged to ...