Originally Posted by KevinF
A 'treewell' is a cavity in the snow that is formed around the base of a tree, formed because the tree's branches
don't allow the snow to pile up underneath the tree.
The tree also gives off radiant heat and melts the snow close to it's base faster than snow around it melts.
A cat track is a run, usually mellow (or mellower than surrounding terrain), that you use to access the 'real runs'/on piste
that follow the fall lines.
Sometimes ski areas name their cat tracks traverses.
However, a real traverse is skier made, in fresh snow, to get to an unskied line. There might be a cliff area, that 99% of people won't
huck. Underneath this cliff area is untracked snow. You cut a high traverse, head sideways underneath cliff, as high as possible
to keep said area untracked, to access lines that haven't been skied out. Once a traverse has been cut (skied), it is bad form
to undercut the traverse and make a new one. If you can't stay in the traverse, then you should drop the fall line.
You traverse across the slope.
The fall line is the natural way for gravity to pull you. Most 'ski runs' follow the fall line. You notice the fall line more in the
backcountry or sometimes 'off piste' when you have to ride against it to avoid terrain below you, ie cliffing out. A traverse goes
against the fall line.