Kentucky Caverns

Mammoth Onyx Cave

Useful Information

Location: Near Horse Cave. I65 exit 58, off KY-335. 140 km from Louisville, 140 km from Nashville.
Open: 13-MAR to OCT daily 8-17, Kentucky Down Under open.
NOV to 12-MAR daily 9-16, Kentucky Down Under closed.
Closed Thanksgiving, Christmas Day and New Year's Day.
Fee: Winter (cave only): Adults USD 10.95, Children (5-14) USD 6.95, Seniors (62+) USD 9.86.
Groups (15+): Adults USD 7.50.
School Groups: Pre-school (-8th) USD 5, High School USD 6, Adults USD 7.50.
Summer (including Kentucky Down Under): Adults USD 18.75, Children (5-14) USD 10.50, Seniors (62+) USD 16.87.
Groups (15+): Adults USD 10.95.
School Groups: Pre-school (-8th) USD 6, High School USD 7.50, Adults USD 10.50.
Plus 6% tax. [2004]
Classification: SpeleologyKarst cave
Light: LightIncandescent Electric Light System
Dimension: T=15,5 °C.
Guided tours: not handicapped accessible
Address: Kentucky Down Under, Horse Cave, KY 42749-0189, Tel. +1-800-762-2869
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.


1799 discovered by Martha Woodson.
1921 developed as a show cave.
1922 electric lights installed.


Roomy level, well decorated passages finally lead down a flight of steps to a stream of clear green water which still flows though the main passage. Sometimes, visitors can see cave salamanders and blind fish or even the rare white cave dwelling crayfish.

Text by Tony Oldham (2004). With kind permission.

Today Kentucky Caverns is a part of Kentucky Down Under, an Australian themed animal park.