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

AP Photo / Paul Sancya Giant sequoias are typically found in California’s Sierra Nevada mountain range, where they reach heights of up to 300 feet. Now, however, with help from conservationists ...

Greg Stock, geologist with the National Park Service, and Rebecca Jones with the Sequoia Parks Conservancy spoke about the science behind the formation of Crystal Cave and what visitors can expect ...

The park is also home to half of the caves and karst systems over a mile long in California, the longest cave in the state, and at least 275 total caves in Sequoia and Kings Canyon National Parks ...

A 28-year-old woman described how she survived for weeks outdoors in California’s Sierra mountains after a solo camping trip ...

At least 50 gray wolves live in California now, a success story for environmentalists and headache for ranchers ...

Detroit is just the start of this initiative. Archangel Ancient Tree Archive wants to expand the sequoia and redwood forest plantings to other cities. The next project is planned for Oakland ...

The Crystal Cave in Sequoia and Kings Canyon National Parks in California has been closed since 2023 for maintenance. The cave will reopen to public tours on May 23. Cave exploration is on the ...

Co-founder David Milarch says Archangel also plans to plant sequoias in Los Angeles, Oakland, California, and London. The massive conifers can grow to more than 300 feet tall with a more than 30 ...

Sequoias need space ... we don’t have wildfires like [California]. The soil stays pretty moist, even in the summer,” he said. “They like to have that winter irrigation, so when the snow ...