Even for the experienced zipliner, Alpine Adventures' zaplines present a challenge. They're part of the three-hour Super Skyrider tour, and bear only a superficial resemblance to sister ziplines. Instead of zooming in a straight line, you have to painstakingly navigate your way across, step by step or handstand by handstand. But don't fret: only two of the nine ziplines are zaplines. The other seven, including the Skyrider and TreeTop tours, allow adventurers to hitch up and zoom off at speeds of up to 60 miles per hour.
Slightly closer to sea level, Thrillsville Aerial Park promises additional wind-in-your-hair activities. Tube down a huge ramp and launch straight into the cushy BigAirBag, scale a cargo net, or whip along a smaller zipline and pretend you're a giant. Alternatively, off-road nature tours take place in six-wheel-drive, custom-built Pinzgauer vehicles, which scale the rocky Barron Mountain in any weather with up to 11 riders strapped in safely. During these exploits, guides fire off facts in between the music that pumps through an overhead stereo system.