2. What is a Tree Well?

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A tree well is a void or depression that forms around the base of a tree can and contain a mix of low hanging branches, loose snow and air.  Evergreen trees in particular (fir, hemlock, etc) can have large, deep tree wells that form when low hanging branches block snow from filling in and consolidating around the base of the tree.  These voids can be hidden from view by the tree’s low hanging branches. 

There is no easy way to identify if a particular tree has a dangerous tree well by sight therefore, treat all tree wells as dangerous. 

In simple terms, a tree well is a hole or void in the deep snow, which is clearly marked by a tree.  You can easily identify and avoid these areas. 

The picture from the site of a fatal Tree Well/ SIS accident demonstrates that even very small trees with just their tops visible can be lethal.

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Mike standing in ungroomd treed area. (in black jacket & black helmet)
 Mike (6'1") Stepping into the tree well (in black jacket & black helmet)
 

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Mike standing in ungroomd treed area. (in brightly colored orange jacket)
 Mike (6'1") Stepping into the tree well (in brightly colored orange jacket)

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