Inner Space Cavern

Useful Information

Image: funicular at the cave entrance.
Photographer: Knut Brenndörfer
Location: Beneath the I-35, 38km north of Austin. Exit 259 Georgetown, on the West side of the freeway, right on the access road.
Open: Summer Memorial Day to Labor Day daily 9-18, Winter Labor Day to Memorial Day daily 10-17, closed 2 weeks prior christmas.
Fee: Adults $12, Children (4-12) $7.25,
Groups (20+): Adults $7, School Children (13-18) $5.50, Children (4-12) $4.50 Discovery Tour: Adults $7, Children (3-15) $5.50. [2002]
Classification: ExplainKarst cave,
Light: electric
Dimension: T=22°C, L=6,400m.
Guided tours: L=1,200m, D=75min.
Address: Inner Space Cavern, PO Box 451, Georgetown, TX 78627-0451, Tel. +1-512-931-2283.
As far as we know this information was accurate when it was published (see years in brackets), but may have changed since then.
Please check rates and details directly with the companies in question if you need more recent info.


Image: a gour.
Photographer: Knut Brenndörfer
1963 discovered by a Highway Department crew drilling core holes for an overpass of a new highway.
1966 opened to the public.


Inner Space Cavern is entered with a cable car, called Scenic Subway. This cable car is a funicular, where a railroad wagon is hanging on a rope and lowered by a winch.

This cave has numerous nice speleothems, including gours, rimstone pools and helictites.

Inner Space Cavern Gallery