Image credit: Mark Moffett

A remote indiginious indian camp found abandoned after developers entered their region in Peru. Photo via Agencia Andina

In the 1960s and 70s, there was an oil boom in Peru.

Orion the hippo gets a visit from the dentist. Photos via AFP/Getty

For a lot of people, visiting the dentist is a traumatic experience--the poking, the prodding, the unnerving sound of the drill. Some even shudder just to receive that 'friendly notice' in the mail, reminding them to get a check-up--the cartoon of that anthropomorphic tooth smiling, clutching a toothbrush offering little consolation from the dread.

Giant crystals dwarf researchers in the Crystal Cave. Photo via veoverde

It seems like a Hollywood movie set; perhaps a place for Superman to get a little alone time--but Mexico's Cave of Crystals is no artificial wonder. Discovered in 2000 when silver miners broke through a wall in a mineshaft, the cave features crystals measuring 30 feet, the largest in the world.