Bright sun dappled the tall forest canopy, the dirt trail crossing through brushy meadows and over massive fallen logs as it ran above an ancient marble cave. Birds chirped and a warm breeze blew, but ...

Oregon’s fir-covered mountains hid a secret. Under the rolling, tree-covered landscape, Oregon Caves National Monument offers seasonal tours. Just south of Grants Pass in the Rogue River Siskiyou ...

When the summer sun is blazing, there’s no better way to cool off than by heading underground. Caves offer a naturally air-conditioned escape, along with a chance to explore some of the Earth’s most ...