The underground rivers that run through this amazing theme park in Mexico are breathtaking natural wonders where you can swim and snorkel in Xcaret during your Riviera Maya vacation. I have Mexico in my sights for
Explore the ancient caves of Hang Son Doong, Vietnam. Hang Son Doong is one of the largest caves in the world and features a fast-flowing underground river. For spelunkers, exploring Hang Son Doong is the equivalent of scaling Mount Everest.
The Baatara gorge waterfall (also known as the “Cave of the Three Bridges”) in Tannourine, Lebanon. The waterfall drops 255 metres ft) into the Baatara Pothole, a cave of Jurassic limestone located on the Lebanon Mountain Trail.
DA NANG The incredible marble mountains of Vietnam. My husband wanted to visit here because during the war he was stationed here/near here, so he wanted to go back. This is outside Hoi An near DaNang, Vietnam.