Natural Bridge Caverns

Natural Bridge Caverns is a cave system in Comal County featuring vast limestone chambers sculpted by water percolating through rock layers over millions of years. The underground passages display mineral deposits and natural formations that accumulated gradually from seeping water and mineral-rich drips.

The cave system was discovered in 1960 by four students from St. Mary's University and opened to visitors starting in 1964. This discovery transformed the underground network from an unknown geological feature into a destination for tourism.

Archaeological excavations near the cavern entrance revealed Native American artifacts and extinct black bear remains dating back thousands of years.

The underground passages maintain cool temperatures and high humidity year-round, making them damp regardless of the season. Wear sturdy shoes with good grip since walking surfaces can be slippery from moisture.

A natural limestone arch spanning about 60 feet creates the opening that leads into this underground network. It ranks among the largest cave systems open to visitors in the state.

Location: Comal County

Address: 26495 Natural Bridge Caverns Rd, San Antonio, TX 78266

Phone: +(210)6516101

Website: https://naturalbridgecaverns.com

GPS coordinates: 29.69249,-98.34303

Latest update: December 6, 2025 16:02