I was traveling to meet up with a group of friends in Glacier NP as a stop along my solo cross country road trip. We didn't set reservations and all the campgrounds were full, so we opted to "dirt bag" it and take advantage of some free national forest camping off the road up a ways along Hungry Horse Reservoir near Doris Creek. There are a few places up the gravel road along the lake where you can pull off to camp away from the road. It's gorgeous! A beautiful location, lakeside access, incredible night skies, easy access via 30min driving to the west side of Glacier NP (photos), quiet (no people), flat ground, perfect for a quick camp fix! Of course, since we didn't take a real campsite there were no facilities - but we're not picky.