In Belize’s Actun Tunichil Muknal cave, a sacred Maya site, plants grow in darkness, sparking concerns about how tourism affects its fragile ecosystem.

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Every year, dozens of them gather at sites including Mammoth Cave National Park in Kentucky, Carlsbad Caverns National Park in New Mexico, and Lehman Caves at Nevada’s Great Basin National Park. They ...

During a visit, outdoor adventurers can tackle the Alpine Lakes Loop—a 2.7-mile path that offers marvelous views of the park’s alpine lakes and conifer forests—while the Lehman Caves system ...

In 1922, President Harding proclaimed Lehman Caves a National Monument. In 1986, Great Basin National Park was established and Lehman Caves National Monument was incorporated into the park ...

There is no entrance fee to visit the area, but there are nominal fees for activities such as camping (twelve dollars per night for developed campsites) and Lehman Cave tours. The Lehman Caves ...

Climb or take a scenic drive up Wheeler Peak, the park’s iconic 13,000-foot mountain, for spectacular views; wander through groves of 3,000-year-old bristlecone pines; take a ranger-led tour through ...