As visitors flock to China’s stunning Zhangjiajie Forest Park, just a few dozen miles away a government-ordered mass cleanup operation is now underway as crews haul bags of trash out of ancient caves.

Deep in the dark recesses of a limestone cave in Alabama soar life-sized figures that span earthly and spiritual realms. Traced into the mud of the cave ceiling by torchlight more than a thousand ...

With an annual rainfall ranging from 140 to 170 inches, the Hoh Rain Forest is a lush ... The Hoh sits on the west side of Olympic National Park, about a two-hour drive from Port Angeles and ...