Located on the mountains above Dominical beach, the Diamante waterfall is the second tallest in Costa Rica falling a spectacular 600 feet before it reaches the Barú river below. Additionally, above the waterfalls, there is a massive natural cliff cavern properly called "La Catedral de Piedra" (The Stone Cathedral) that is also worth visiting. If you take the "Tree of Life" tour, you will have lunch at this marvelous natural "cathedral".