Natural Bridge Caverns - Texas' largest commercial cave system discovered in 1960

Natural Bridge Caverns, about 20 miles northeast of downtown San Antonio, was discovered by four college students in 1960 and developed into Texas' largest commercial caverns. The site's dramatic underground formations and above-ground adventure attractions (including a canopy challenge and maze) are frequently featured in travel and adventure posts on social media. Guided cave tours and seasonal events at the site draw visitors whose photos and videos often circulate online.