Natural Entrance, Carlsbad Caverns National Park, New Mexico Carlsbad Cavern includes a large cave chamber, the Big Room, a natural limestone chamber which is almost 4,000 feet (1,220 m) long, 625 feet (191 m) wide, and 255 feet (78 m) high at the highest point. It is the third largest chamber in North America and the seventh largest in the world. Mexico Travel, North America, Carlsbad Caverns, Caverns National, National Parks, Nature Entrance, United States, Caverns Entrance, New Mexico
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Belize ... This is called the ATM Tour or ATM Cave. It's amazing, you swim in with headlamps on and climb rocks and ladders to get to different levels. On each 'platform' you observe different artifacts. It's pitch dark inside with flowing water. Once in a lifetime tour, there are 25 guides that go through special training to be allowed to take tourists in the cave.
Path leading down the natural entrance to Carlsbad Caverns in Carlsbad, New Mexico, USA - There are more than 119 known caves that reach depths as much as 1600 feet (490 m) below earth's surface.