The Knik River Valley has everything from glacial hikes to horseback rides and dog sledding—and it's a must-visit when visiting Alaska's Denali National Park.

After a four-year closure due to natural disasters, Crystal Cave in Sequoia National Park reopened to the public this weekend in time for Memorial Day, the unofficial start of the summer.

Crystal Cave, located in Sequoia National Park, reopens to the public on May 23 after a four-year closure due to fire and weather damage. Visitors can purchase tickets for guided tours ...

Spooky, wonderous, stalactite-y: Crystal Cave in Sequoia National Park returns this summer season for guided tours after a four-year closure due to consecutive natural disasters in the national park.

Crystal Cave in Sequoia National Park is reopening for guided tours after a four-year closure due to natural disasters. The cave, formed in 200 million-year-old marble, features unique geological ...

Chip visits Carter Caves State Resort Park in Carter County. Carter Caves State Resort Park is one of the most unique state parks in the country. Along with 30 miles of hiking trails, RV and ...

The stalactites and stalagmites of Sequoia National Park’s Crystal Cave, a sprawling subterranean wonder that’s been closed for four years, will be accessible again this summer. But to get in ...

Crystal Cave, the ancient marble cavern at the end of a steep half-mile hike in Sequoia National Park, is slated to reopen to visitors this summer after four years of closure.The cave features a ...

A tiny shark species dating back hundreds of millions of years has been identified at Mammoth Cave National Park in Kentucky, the National Park Service announced Monday. The identification was ...