Frommer's 500 Best Adrenaline Adventures features high-octane experiences for both passionate travelers and adventure seekers. From dare-devil sports to hair-raising haunted houses to wacky and obscure festivals and races, Frommer's offers ideas for a wide variety of adventures.  Chapters include: In the Air:  Hangliding, Bungee Jumping & Ziplining On the Water: Diving, Snorkeling & Whitewater Rafting Mountains & Canyons:  Skiing, Snowboarding, Climbing & Hiking Ground Adventures:  Mountain Biking, Motorcycling & Sand-surfing Expeditions & Drives:  Safaris, River Trips & Desert Treks Adventure Camps:  Stuntman School, Cattle Wrangling & Covert Ops Races & Festivals:  Iditarod, Bay to Breakers & Extreme Eating Contests With the Animals: Diving with Sharks, Canoeing with Hippos & Swimming with Dolphins Offbeat Adventures:  Gloucester Cheese Roll & Tomato Food Fight Rides, Spooks & Scares:  Haunted Houses, Rollercoasters & Catacombs