Jacob's Well -- Wimberly, Tx: One of the most significant natural geologic treasures in the Texas Hill Country. It is one of the longest underwater caves in Texas and an artesian spring. Jacob’s Well surges up thousands of gallons of water per minute!
Angel Falls (Salto Ángel) in Venezuela is the world's highest uninterrupted waterfall, with a height of 979 m ft) and a plunge of 807 m ft). The waterfall drops over the edge of the Auyantepui mountain in the Canaima National Park.