Underground - Puerto Rico Puerto Rico hides some of its natural beauty beneath the surface. It is honeycombed with caves, hiding nature's secret works of art. Rio Camuy Cave, the third largest underground river and cavern system in the world, has tours for visitors with the initial 200-foot descent into the cave on a comfortable tram. For a more active underground experience, book a spelunking trip with an adventure tour operator. These outfitters will provide the necessary gear from life jackets to headlamps and the guidance essential for safe caving.
Boulders littering the floor resemble scoops of coconut ice cream.
Lodging in Anguilla runs from inexpensive guest houses to some of the most expensive resorts in the Caribbean. Since it's a small island, you can stay anywhere and explore by bike without difficulty. For the easiest access to Grand Etang National Park, stay in St. George's or Grand Anse Beach. Lodging in or near the Blue Mountains ranges from dormitory style to plantation deluxe. Hiking and caving day trips are often arranged with transportation from hotels and inns in San Juan provided by the guides.