Hidden River Cave & American Cave Museum
We had grand plans to see Mammoth Cave National Park on this trip. The federal government had other plans, specifically no plans at all, because the government shutdown had the park locked up tight. So we pointed the car back toward I-65, grumbling, and that’s when we saw signs for Hidden River Cave. Let me tell you something: it turned out to be the best consolation prize we’ve ever stumbled into.
A Cave With a Street Address
The entrance is at 119 East Main Street in Horse Cave, Kentucky, and no, that’s not the gift shop address with the cave a shuttle ride away. The cave mouth sits in a giant sinkhole directly behind Main Street. The town grew up around the hole. Sadly, too many of the storefronts around it sit empty these days, which is a shame, because what’s underneath them is spectacular.
Down the 230 Stairs (Then 95 More)
The guided tour runs about an hour and drops you down roughly 230 stairs to a landing, then keeps going: about 325 steps one way by the time you’ve crossed to Sunset Dome. Our guide Jay, a local who’s been caving for 14 years, knew every rock, every story, and every terrible thing the town ever dropped into this cave (more on that in a minute). Two underground rivers run through the dark more than 100 feet below the town.
The Town That Ran on a Cave
Here’s the part that blew my mind. In the 1890s a dentist named Dr. George A. Thomas rigged a vertical shaft turbine where the cave’s two streams meet, and used it to pump water up to the town and, later, to spin a generator. That made Horse Cave one of the first towns in Kentucky with electric lights, all of it powered by a cave. The system ran into the early 1940s, and the rusty machinery is still bolted to the rock where they left it.
The Cave That Stank
For much of the twentieth century, this place was a horror story. The same sinkhole that made the cave convenient made it a drain: garbage, runoff, and raw sewage all ended up in the underground rivers, and by mid-century the cave was essentially dead. Jay told us the older folks in town still remember summer days when the smell rising out of the sinkhole would run you off Main Street. The American Cave Conservation Association moved its headquarters here and led the cleanup, the groundwater problems got fixed, and the cave came back to life. Jay says the cave now supports more than 120 species, with 22 of them found in this cave and nowhere else on Earth. We saw the proof ourselves: the river runs clear, and the locals with gills and antennae are home again.
The Swinging Bridge and Sunset Dome
Deep in the cave you walk across the world’s longest in-cave swinging bridge, and I am delighted to report that it absolutely swings. It’s sturdy as can be, but every step from the folks behind you arrives in your knees a half second later. The tour ends in Sunset Dome, one of the largest free-standing cave domes in the country, lit up in oranges and yellows like its namesake. Standing at the bottom of it, 150 feet under a town, is worth the price of admission all by itself.
The American Cave Museum
Your tour includes the American Cave Museum up top, and even on its own it’s worth a stop (admission is free). Two floors cover karst geology, groundwater, and cave history, including a full exhibition on Floyd Collins, the caver whose 1925 entrapment at nearby Sand Cave became one of the first national media circuses in American history. The exhibit walks through it in five acts like the tragedy it was.
Go. Seriously.
If Mammoth Cave is the famous sibling, Hidden River is the interesting one. It’s a fraction of the crowd, it’s run by a nonprofit that actually saved the place, and the whole thing sits under a town that once used it as a light switch, a faucet, and a dumpster. Tours run hourly, the museum is free, and they’re even pet friendly. Just respect those 325 steps; they all come back up with you.
