Many of the features you see in the national parks today look the same as when your ancestors visited, even if the way we visit these lands has changed.

After four years of closure, Crystal Cave is reopening this month in Sequoia National Park. Learn why it was closed, how to ...

Crystal Cave has been one of the most popular visitor destinations in the park since it opened for public tours in 1940.

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 ...