In the ancient world devoid of ziplines, humans were confined to the ground, endlessly speculating about the natural wonders that existed at the tops of all proximate trees and mega-skyscrapers. Leapfrog the evolutionary gap with today’s Groupon: for $45, you get a zipline tour from Wahoo Ziplines in Sevierville, Tennessee (an $89 value).

Through Wahoo, guests can soak in majestic views of the Great Smoky Mountains as they soar above treetops at speeds of up to 40 mph. This two-hour tour features six signature ziplines, which, when stretched end-to-end, total a distance of more than 2 miles. Preflight, participants receive a briefing on safety before donning gloves, a helmet, and a safety harness for their aviatory journey. Then one of Wahoo’s veteran, certified guides hooks up the harnesses and ushers thrill seekers through the skies on cables that are strung 40–250 feet off the ground, the exact altitudinal range required for impressing bald eagles and doubtful middle-school gym teachers. Grouponers are encouraged to come prepared by wearing comfortable walking or tennis shoes, putting long hair in a low ponytail, and fastening cameras around the wrists or neck with straps.