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Inner Space Cavern

About this business

After being sealed for over 10,000 years, this cave was discovered in 1963 when a group of workers were digging to build a highway overpass. Daily tours are available and last just over an hour. The cave stays a comfortable 72 degrees Farenheit year-round, and features not only beautiful rock formations but also the remains of prehistoric mastodons, saber-tooth cats and other ice age animals. After your tour, enjoy the shaded picnic area with a playscape for children. 

Location details

4200 N Interstate 35 Frontage Rd, Georgetown, TX, 78626, United States

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WeekdayScheduleStatus
Mon9:00 a.m. to 6:00 p.m.
Tue9:00 a.m. to 6:00 p.m.
Wed9:00 a.m. to 6:00 p.m.
Thu9:00 a.m. to 6:00 p.m.
Fri9:00 a.m. to 6:00 p.m.
SatClosed
SunClosed
0.02 reviews
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Contributor 
18 years ago

A wondrous cavern under the state's major highway. – The Background Deep under the bustle of Georgetown traffic lies a living world that has been in the making for more than 100,000 years. Workers drilling in the initial stages of I-35 discovered these caverns in 1963. The Experience The discovery opened a world of exquisite formations, like the Flowing Stone of Time, the Lake of the Moon, and the "soda straw" ceilings. It also offered a showcase of Pleistocene-age fossil remains including bones of the mammoth and the saber-... read more

Charla's profile image
22 years ago

Fantastic Caverns – Inner Space Caverns are a delightful trek on a hot day. Our guide was informative and entertaining throughout. A little pricey, but worth it. 

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Inner Space Cavern is closed now. It will open tomorrow at 9:00 a.m. 

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