8. Volcano Boarding
Normal people usually stay away from volcanos, but not these thrill seekers! These guys get their safety suits and slope down at speeds up to 50 miles per hour from a frying pan of a mountain.
7. BMX Racing
This sport is clearly not for kids. BMX stunts require strength, stamina, swiftness and, of course, the guts! These are hard to pull off already. But make a race and put some life-threatening obstacles on the way and the sport becomes deadly.