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.

What began as a single cave entrance quickly expanded into a massive underground system filled with towering rooms, flowing ...

We went in expecting a normal cave trip, but everything changed when we realized two caves were connected by a waterfall and ...

Beneath the United States lies a surprising network of caves shaped over millions of years. Some feel almost otherworldly, with strange rock formations and the occasional glow from naturally occurring ...

While precious summer hours are slowly ticking away, fall-like weather may be nice enough to get outside on the weekends for weeks yet. Are waterfalls on your list? What about caves? If they aren't, ...