Inner Space Cavern was discovered by a Texas Highway Department core drilling team in the Spring of 1963.
Six inch core samples were being taken to determine if the ground was stable enough to support a large highway overpass. As they were drilling one of the test holes, the bit suddenly dropped twenty-six feet and the highway crew knew there was something down there besides rock. Several more test holes were drilled in different locations, but the large cavity below ground was encountered time after time. The supervisor of the drilling team decided to enlarge one of the holes to twenty-four inches and examine what was below.
After drilling through forty feet of solid limestone, the bit broke into what is now INNER SPACE CAVERN. One of the workmen was lowered into the hole by standing on the drill bit and holding tightly to the stem. He was the first human being to enter INNER SPACE. What an exciting experience this must have been! INNER SPACE is highly decorated with all types of formations both large and small. There are complete rooms of soda straws (hollow crystalline formations) that hang from the ceiling and resemble regular drinking straws. Other sections have a profusion of delicate helictites that grow in every direction. The entire cave is rich in snow-white crystal flowstone that covers the floors and walls.
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