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Review & FAQ:

  • What are the Natural Bridge Caverns?
  • Why are they called the Natural Bridge Caverns?
    • The caverns are named after a 60-foot long natural limestone bridge that crosses the amphitheater at the entrance.
    • This bridge was formed when a sinkhole collapsed underneath it.
  • What geological formations can be found in the caverns?
    • The caverns contain several beautiful and unique speleothems, including:
      • Stalactites
      • Stalagmites
      • Flowstones
      • Soda straws
  • What is the temperature inside the caverns?
    • The temperature inside the caverns is a constant 70°F.
  • How deep do the guided tours go?
    • The guided tours take visitors as deep as 180 feet below the surface.
    • However, there are undeveloped sections of the cavern that reach 230 feet underground.
  • Are the Natural Bridge Caverns still forming?
    • Yes! Due to the porosity of the limestone rock, the caverns are still actively forming and changing.
    • Rainwater seeps through the rock, dissolving calcite and slowly creating new speleothems.

26495 Natural Bridge Caverns Rd, San Antonio, TX 78266

Natural Bridge Caverns | Texas Caves
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Rating: ⭐⭐⭐⭐⭐


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