| Natural Bridge Caverns |
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Natural Bridge Caverns are the largest known Cavern s in the state of Texas . The name was derived from the 20 M (sixty- Foot ) natural Limestone slab bridge that spans the amphitheater setting of the cavern's entrance. The span was left suspended when a Sinkhole collapsed below it. The caverns are located near the city of New Braunfels, Texas in the Texas Hill Country . The caverns feature several unique Speleothem s and other Geological formations. The temperature inside the cave is 21 degrees Celsius (70° F ) year-round. The caverns are still very active and growing. Water flows and drips constantly throughout, causing the formations to retain a Wax y luster that can be seen in few caverns. The caverns were discovered on March 27 , 1960 , by four students from St. Mary's University in nearby San Antonio . During excavation of the entrance trail, Arrow heads and Spear heads dating from 5,000 B.C. were found. Also, just inside the entrance, jawbones of a species of Grizzly Bear that became extinct over 8,000 years ago were discovered. Natural Bridge Caverns became a registered United States National Natural Landmark in 1971 . The site, located at , is tourist-oriented and suitable for children. EXTERNAL LINK |
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