Snow boarders who don't covet the cold and wet are in luck. There's now a warmer, drier version called volcano boarding, and just like it sounds, you barrel down the barren ash slopes of a volcano (the more active, the better) at death-defying speeds. That's right: hike to the summit, take in the outstanding views, then hurl yourself to the bottom on a specially constructed sled-like board. Cerro Negro, a young, 2,388-foot volcano in western Nicaragua, is the site of some intense boarding, as is Mount Yasur, an ever-erupting 1,184-footer on the island of Tanna, part of the South Pacific island nation of Vanuatu.