Along with underground adventures, Mammoth Cave National Park in Kentucky offers great hiking and kayaking, too.

You may not realize that the U.S. is filled with hidden, mysterious caves. Several are part of the national or state parks, and they’re worth the excursion. Whether you are a thrill-seeker looking for ...

Tickets for Sequoia National Park's Crystal Cave 2026 season go on sale March 16. The 2025 season sold out quickly.

Descending into Crystal Cave is so surreal that it feels like you're entering a movie set and at any moment Indiana Jones will come swinging through with his whip. The nearly 130-year-old cave is not ...

This family-friendly Arkansas cave is an adventure lover’s dream, offering an exciting and educational experience for everyone to enjoy together.

This little-known park has miles of underground caverns, some of which are normally open for tours (in real life and virtually), plus hiking trails to explore.

Cave exploration -- or spelunking -- is an affordable, family-friendly activity that can feel like a bona fide adventure. Spurred along by changes in the atmosphere involving wind, water, sand erosion ...