On your next getaway, you can explore the world under the earth’s surface that never sees the light of day. From cave kisses ...

Tulelake, CaliforniaFormed by half a million years of volcanic activity, Lava Beds National Monument contains the highest concentration of lava tube caves in the U.S. — more than 800 in all. These ...

Carlsbad Caverns National Park in southeastern New Mexico is home to 119 known caves, including North America's largest cave chamber, the Big Room. When you purchase through links on our site, we ...

The cavern is open daily except on Thanksgiving, Dec. 25 and Jan. 1. More: Free summer concert series in El Paso: Your guide to outdoor music What to know about Carlsbad Caverns, N.M. El Pasoan ...

Rangers at Carlsbad Caverns National Park in southern New Mexico describe it as a “world-changing” event for the tiny microbes and insects that call this specialized subterranean environment ...

Hundreds of cave formations are shown decorating the Big Room at Carlsbad Caverns National Park near Carlsbad, N.M., Dec. 18, 2010. (AP Photo/Susan Montoya Bryan, File) More Stories ...

When a recent visitor to Carlsbad Caverns National Park in New Mexico dropped a bag of Cheetos inside one of the caves, losing a snack was probably an inconvenience. But to the tiny microorganisms ...

Rangers at Carlsbad Caverns National Park in southern New Mexico describe it as a “world-changing” event for the tiny microbes and insects that call this specialized subterranean environment home.

Hundreds of cave formations are shown decorating the Big Room at Carlsbad Caverns National Park near Carlsbad, N.M., Dec. 18, 2010.

Hundreds of cave formations are shown decorating the Big Room at Carlsbad Caverns National Park near Carlsbad, N.M., Dec. 18, 2010.