Natural Bridge Caverns offers visitors many experiences, the most popular being a 75-minute walking tour that travels 180 feet (55 meters) underground through the hallways and various speleothems (formations) made by mineral deposits. Aboveground activities include ziplines, a “canopy explorer course,” and the opportunity to mine for gems, minerals, and fossils.
The temperature inside the cave is a constant 70°F (21°C), and the humidity is steady at 99 percent. Consider bringing a light jacket, as it can feel chilly underground.
Four caverns tours are available: the standard Discovery Tour, the Hidden Passages Tour, the Lantern Tour, and the Adventure Tour.
The on-site maze is sure to entertain the whole family.
While the visitor center is wheelchair-accessible, the caverns are not due to narrow, steep passageways.
Natural Bridge Caverns is about a 30-minute drive north of downtown San Antonio, eight miles (13 kilometers) west of I-35.
The Natural Bridge Caverns are open year-round except on Thanksgiving, Christmas Day, and New Year’s Day. During the holiday season, thousands of twinkling lights illuminate select passages, performers sing Christmas carols, and there’s a fully decorated Christmas village and “reindeer maze.”
Just a few miles from Natural Bridge Caverns lies another amazing natural wonder: The evening emergence of one the world’s largest bat colonies. The Bracken Bat Flight consists of millions of free-tailed bats spiraling out of Bracken Cave and taking to the skies on their nightly hunt for insects. Some tours include access to both sites.