Tulelake, CaliforniaFormed by half a million years of volcanic activity, Lava Beds National Monument contains the highest ...

Take a break to explore the property, touring the keeper's residence and climbing the 87-foot spiral staircase to the top of ...

8 stunning SoCal sea caves to visit during the winter low tides. By Catherine Pearlman. Jan. 25, ... kelp forests and at least seven caves to explore, the La Jolla Underwater Park has it all.

This National Monument in the Pacific Northwest Was Just Named a Dark Sky Park — and It Has Stunning Marble Caves, Too. Oregon Caves National Monument and Preserve has long had an amazing ...

The most beautiful caves around the world prove that, in some ways, the Earth itself is an incredibly gifted architect. After all, these stunning natural spaces are commanding, enduring ...

The Marble Arch Caves, in County Fermanagh, are a labyrinth of tunnels and chambers that feature glistening stalactites and stalagmites and dramatic rock formations dating back 340 million years.

The Marble Caves sit on the shores of a turquoise glacial lake in southern Chile. Light bounces off the water onto the walls, creating a magical, ever-changing display inside the caverns.

Arizona's 10 most famous caves and caverns: Here's how to explore them. Tiffany Acosta. Arizona Republic. While Arizona is famous for its stunning landscapes and dramatic rock formations, ...

Many of the world's most awe-inspiring caves are found on the shores of oceans and lakes. Here are 10 extraordinary water caves from around the globe.

Here are three options to explore during your summer travels across Upstate New York. Howe Caverns Tours of Howe Caverns start with a 156-foot descent into an enclosed cave.