Terrain and tour classification makes it easier to select safer trips and routes.
ATES - Avalanche Terrain Exposure Scale (in Norwegian KAST) divides the terrain in 5 terrain classes. Determine which terrain is suitable for you and your group on the given day. The goal is to prevent avalanche accidents.
Choose easier terrain if the avalanche risk is high or if the group has little experience traveling in avalanche terrain. Even in simple terrain, avalanche terrain exists, but it is also easy to avoid it.