Park rangers are searching for two rowdy guests who were filmed toppling and destroying ancient rock formations at the U.S.

A hidden reservoir of groundwater more than twice the size of Lake Mead is buried inside the Oregon ... mountain range changes with depth. Deeper rock tends to be hotter because it's under more ...

Just a just a few miles downstream from Lake Mead along the Colorado River ... living a bit like castaways on a desert island. You'll want to treat this remote area like the wilderness it truly ...