Ruby Falls is an underground waterfall located over 1,000 feet beneath Lookout Mountain in East Tennessee. Travelers visit for the dramatic waterfall reveal, guided cave tours with stunning rock ...

Follow a waterfall underground when you attempt this beautiful—yet slightly daunting—cave trail in Alabama.

While precious summer hours are slowly ticking away, fall-like weather may be nice enough to get outside on the weekends for weeks yet. In case you weren't paying attention, fall returns on Sept. 22.