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7 Hikes for Adrenaline Junkies

Here are seven terrifying treks you may want to leave off the bucket list -- they could be your last.

August 9, 2013
3:00 PM EDT
| Ondejvek/Wikimedia Commons
| Allard Schmidt/Wikimedia Commons
| Rainer Hubenthal/Wikimedia Commons
| Hermann Luyken/Wikimedia Commons
Abrams Falls, Great Smoky Mountains National Park. Tenn. | Silent Melanie/Wikimedia Commons
| UCAR