Charco Azul cave and waterfall tour, Puerto Rico: swimming limestone caves, Taíno petroglyphs and cliff jumping
An hour's drive west of San Juan, the Indio River has been cutting through Puerto Rico's northern limestone karst belt for millions of years. The result is Charco Azul and the Arenales Caves — a system of underground tunnels, sculpted slot canyons, turquoise swimming holes…