After we dropped the boy at camp, we headed north-- and spent our first night along the Flathead River, across from Glacier National Park. Up there, the sky isn't truly dark until after 11:00 PM or so; but with the song of the river flowing right outside, I slept hard-- until something 7:30 in the morning, which is nearly unheard of for me!
From there, we drove west, looking for scenic routes. Midway through what looked on the map to be a standard gravel road, we came across a sign that warned that a portion of our route was "not maintained for public access." Trusting in God and 4 Wheel Drive, we pressed onward, and learned about the adventures of logging roads.
The "road" was in fact a narrow path, frequently with knee-high weeds down the middle testifying to lack of use. The mountain went up on one side, down on the other, and one had best drive carefully because there are no guard rails or turnarounds. The picture here is one of the tidier stretches.
One or two points were a bit unnnerving... but I'd travel it again in a heartbeat.