Sequoia National Park is known for its iconic trees - the giant sequoias. They tower hundreds of feet above the Sierra Nevada. But another draw to this park is hidden thousands of feet below the Sierra’s peaks. It’s called Crystal Cave, and it recently reopened to the public after a parade of natural disasters left it inaccessible for years. KVPR’s Joshua Yeager joined the very first tour of the cave as it reopened and takes us underground.