This Day in Texas History: Natural Bridge Caverns Opens to Public

This Day in Texas History: Natural Bridge Caverns Opens to Public July 03, 1964 On this day in 1964, Natural Bridge Caverns, the largest known cavern in Texas, was opened to the public. The cavern was discovered on March 27, 1960, by four spelunkers who were students at St. Mary’s University in San Antonio. It…
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