Natural Bridge Caverns, the largest known cavern in Texas, was discovered on March 27, 1960, by four spelunkers who were students at St. Mary’s University in San Antonio. The name was derived from the sixty-foot natural limestone slab bridge that spanned the amphitheater setting of the cavern’s entrance. If you have never been in a cave before the formations can make you feel like you’ve stepped into a dreamworld. Their size and the lack of light make it a bit hard to get a good picture–count on buying some postcards.

You can walk through the cavern on a number of guided tours. The cavern stays at a year round 70 degrees–although the humidity will make it feel a bit warmer especially towards the end. Wear comfortable shoes with good non-slip soles. The trail can be a bit steep and is frequently wet. Because of time constraints we decided on the quick one and a half hour North Cavern Tour. Tours as long as four hours are available.

Natural Bridge Caverns is a quick trip from Austin. The cavern is located off Farm Road 1863 in the hill country of Comal County midway between New Braunfels and San Antonio

Natural Bridge Caverns, 26495 Natural Bridge Caverns Road, Natural Bridge Caverns, Texas, 78266, (210) 651-6101. www.naturalbridgecaverns.com.