EntityQ7837652· pop 5· linked from 10 articlestree wellSign in to savevoid or area of loose snow around the trunk of a tree enveloped in deep snowConnectionshikingEntityskiEntitysnowmobileEntityconcussionEntityjoint dislocationEntitysnowshoeEntitysnowboardEntitypisteEntitybackcountryEntitysnow groomingEntityCategoriesHazards of outdoor recreationSkiingSnowSnowboardingWeather hazards