Imagine standing at the rim of a vast caldera, the earth beneath your feet formed by unimaginable forces millions of years ...

Iran's folded rocks are a colorful formation that is part of the Greater Caucasus mountains, which formed when the Eurasian tectonic plate collided with the Arabian plate millions of years ago.

Pennsylvania has 121 state parks, but somehow Salt Springs remains the quiet achiever, the unassuming middle child who ...

Have you ever wondered what the world looked like millions of years ago? Imagine walking in a place where every rock could ...

Looking for a quick weekend getaway near Los Angeles, but aren't sure where to start? LA has many awesome options for a quick ...

Carrying a giant, black folded foam pad on her back, Alexandra Toth hikes a path surrounded by towering southern red oak trees in a Tennessee forest. She is on her way to boulder at one of her ...

Radnor Lake exists as an improbable oasis of tranquility just minutes from Nashville’s urban bustle, like finding a library ...

Visitors can explore the 21-mile cave system for short 1-hour trips, or longer 3-hour tours. But for the adventurous types, the park offers an overnight expedition not only along the underground river ...

WorldAtlas named 8 of Nevada’s strangest landmarks, from creepy motels to desert art and an accidental geyser. Here’s what to ...