Historical Marker

Inner Space Cavern

Georgetown · Williamson County · Dedicated 1973 · THC Atlas #5507014933

The roadside stories worth pulling over for.

Marker Inscription

Discovered in 1963 on land of W. W. Laubach by core-drilling team, Texas Highway Department. Exploration begain in November 1963 and continues to present. Carved by water from Edwards limestone, cave lies along the Balcones Fault and is estimated to be 100 million years old. 95 percent of formations are still growing. Cave was apparently open during late Pleistocene (20,000 - 45,000 years ago), for bones of many extinct mammals have been found in debris cones filling former natural entrances. Remains of sabre-toothed cats and mammoths are represented. (1973)

About this site

Inner Space Cavern is a historical marker in Georgetown, Williamson County, dedicated in 1973. It is one of 241 historical markers documented in Williamson County in the Texas Historical Commission Atlas, among 448 historic sites cataloged across the county.

The site sits at 30.6080, -97.6880 near Georgetown. The nearest cataloged historic site is Page-Decrow-Weir House (historical marker), about 1.1 miles away. Others within a short drive include Taylor, John McQueen, Dalrymple, William Cornelius, and Presbyterian.

This record corresponds to Texas Historical Commission Atlas #5507014933. Use the map below for its exact position and turn-by-turn directions.

📍 30.6080, -97.6880 · Georgetown, Williamson County
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