This document lists the top 10 adventure sports in the world including: 1) Heli-skiing which involves snowboarding accessed via helicopter, 2) Volcano boarding which involves zooming down active volcanoes at high speeds, and 3) Downhill mountain biking which quickly glides over rocks and trees. Other adventure sports mentioned include fresh water cave diving, sky diving, bouldering, kite surfing, ice climbing, micro flying, and bull riding.