Eskimo's did not have shovels for thousands and thousands of years. They stayed put, and are still there.
I do not want to banter back and forth on the history of excavation. What has been demonstrated is nature-mediated technology. Previously posted in this thread was a comment about an alleged discovery of some den or cave. I see no discovery in dens, hollows or root ball cavities. Utilizing previously used caves, dens, mine shafts and hollow logs is common with many animals.
Sasquatch excavations have not been shown. A guess for a hiding location--underground.
The underground Sasquatch theorists have not shown multiple entrances/exits--escape routes.
My comment for the 'den' seekers to take under advisory is to look up in the trees when they believe they are in a special location.