Deep in the high desert of central Oregon, a rock shelter hid two small scraps of hide for more than twelve thousand years.

Deep within the famed El Castillo pyramid of Chichén Itzá, Mexico, an intriguing mystery has come to light. Explorations have unveiled a significant cave-like hollow beneath its structure, revealing ...

Pitkin County authorities said Monday evening that a climber was missing on Pyramid Peak — despite searchers finding a snow cave likely to have been used by the man. The Sheriff’s Office said it ...

Archaeologists are opening a cave sealed for more than 30 years deep beneath a Mexican pyramid to look for clues about the mysterious collapse of one of ancient civilization's largest cities.

Experts have long been studying and exploring Chichén Itzá, a major set of Maya ruins on the Yucatan Peninsula of Mexico that includes the impressive pyramid El Castillo. But, as The Associated Press ...

From a fox carved from an old plant, to a nuclear war bunker the size of 33 homes hidden under a bungalow, these are some of ...