I’m preparing to jump off a 70-foot cliff into a pit of darkness, or as they like to call it around here, “Hell.” I’m shivering slightly. I’m not sure if it’s fear or the chill that’s in the air, 100 feet beneath the city, where it’s a constant 56 degrees.
The cavern was created by the mining of limestone for road construction from the 1930s to 1970s. Besides the zipline, offerings include historic tram tours, an underground Christmas lights display and, soon to open, the world’s first underground ropes-challenge course. The Zips’ six lines and three “challenge” bridges vary in height, from being near the cavern floor to rising 10 stories above it.