Churbuck also links to information about the Trans-Taiga Highway, a desolate utility road off the James Bay Road way way way way up in Northern Quebec. Map here; pix here. The only towns along the Trans-Taiga, apparently, are private settlements for Hydro Quebec workers.
Fun stuff! Toss your snowshoes and bug spray (and lots of spare tires) in the Unimog and let’s go!