Natural Bridge Caverns
Located just North of San Antonio Texas is one of the world's premier caverns, Natural Bridge Caverns. The Hidden Passages Tour takes guest up-close to rare and delicate cave formations with dramatic lighting and includes a total darkness experience.
Over 50 smaller streams contained in 18+ miles of known passages combine in the main river passage to create America's longest navigable underground river. Living in the miles of flowing streams are rare blind cavefish and blind crayfish. Passengers on the custom electric tour boats can usually sight some of these unusual creatures as they float though the winding passages.