Your guided 45 minute to one hour tour takes you through corridor after corridor of timeless beauty. The tour leaves hourly throughout the day; check schedule online. Wear comfortable walking shoes and bring a camera The cavern is a cool, comfortable 64 degrees year round. Texas only cavern with an interior waterfall Bring your picnic to enjoy on our 105 acre park before or after your tour. There are nature trails and a playground to explore as well as our unique gift shop. Tour: Adult: $14.95; Children: (ages 4 11) $9.50. Saturday 9am-5pm, Tours at 10am, 11am, 12pm, 1pm, 2pm, 3pm, 4pm; Sunday 10am-5pm, Tours at 11am, 12pm, 1pm, 2pm, 3pm, 4pm through Memorial Day. Fee