Most people think of visiting big cities, national parks, and beaches when they plan a U.S. trip. There’s hardly anyone who’s ...

But beneath its stunning beauty lies a deadly secret that makes it one of the most dangerous places on the planet. In this ...

But the Cave of Crystals, which is shaped like a horseshoe, is the biggest by far: stretching 110 metres (360 feet) across and with a maximum volume of more than twice an Olympic swimming pool ...

Crystal Cave, located in Sequoia National ... restoring the solar electrical system that powers the cave lights and restoring the ticket entrance kiosk. Need a break? Play the USA TODAY Daily ...

Crystal Cave, the ancient marble cavern at ... And while the hike down to the cave’s entrance is relatively painless, the trek back up calls for a climb equivalent to a 20-story building.