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Kentucky’s underground zip line; Washington state’s healing sludge

Kentucky’s underground zip line

I’m standing 100 feet beneath Louisville, preparing to jump off a 70-foot cliff into “a pit of darkness,” said Wendy Pramik in the Cleveland Plain Dealer. The Louisville Mega Cavern, a 100-acre former limestone mine located underneath the Louisville Zoo, is home to the world’s only underground zip-line course and has become the city’s most popular attraction since its 2011 opening. Sharing the cavern are a tram tour, a ropes course, and—starting each November—a “Lights Under Louisville” holiday display. The cavern even has Wi-Fi. As others in my group take the leap and disappear into darkness, I shiver slightly, and I’m not sure whether to blame fear or the cave’s constant 56-degree temperature. When it’s finally my turn, I inhale—and jump. Sailing through the shadowy cavern in a harness attached to the overhead wire, I exhale slowly. “This is fun, I think, and not as scary as I envisioned. The cave is wide, open, and fascinating.

Washington state’s healing sludge

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