The cave that the Kanohina system seems poised to supplant in the record books is on the other side of the Big Island. It was likely created during a 15th-century eruption of a different volcano ...

For subterranean adventures in the United States, arguably no state offers more than Tennessee, which has some 10,000 caves and caverns ... is also home to The Volcano Room, a subterranean music ...

are natural caves that are open to visitors and natural caves that were formed following the eruption of the Corona Volcano. Cueva de los Verdes, which means "Cave of the Greens" is known for ...

Just north of the Deschutes County Fairgrounds, the Redmond Caves, a series of five caves administered by the Bureau of Land ...

In recent geology, no other single volcano on Earth has a longer lava flow. Visitors can see the remnants of the lava pipeline at Undara Volcanic National Park. Nearby the limestone formations of ...