Mountainboarding
（重定向自Dirtboard）
Mountainboarding, also known as Dirtboarding, Offroad Boarding, and All-Terrain Boarding (ATB), is a well established if little-known action sport, derived from snowboarding. A mountainboard is made up of components including a deck, bindings to secure the rider to the deck, four wheels with pneumatic tires, and two steering mechanisms known as trucks. Mountainboarders, also known as riders, ride specifically designed boardercross tracks, slopestyle parks, grass hills, woodlands, gravel tracks, streets, skateparks, ski resorts, BMX courses and mountain bike trails. It is this ability to ride such a variety of terrain that makes mountainboarding different from other board sports.