King Marcos cave is best known for its enormous natural formations. Some of its stalagmites and stalactites are so sculptural that they have earned nicknames – one large formation is called "the Tower of Pisa.”

An underground river runs through the cave, and intrepid cave explorers will wade through it on the tour. You’ll have boots and a hard hat provided by your guide, and ropes inside the cave will allow you to navigate. Visitors only explore the first few hundred feet of the cave – the cave is just over half a mile (1 km) long, and toward the back it gets too dark for flashlights.

Nearby the caves, you’ll see an enormous waterfall. You’ll hear its rushing waters long before you arrive at the site. Once you explore the cave, you’ll already be wet, so why not go for a swim? Natural spring swimming holes wait nearby.

Making a wish while you’re in the cave is a local tradition. Wishes made in the King Marcos cave have a reputation for coming true.

Sunscreen, bug spray, bottled water, swim suit, towel, a change of clothes, and money for personal expenses and gratuities.

Transportation, guided tour, entrance fee, and equipment (including a helmet),