This has been one of my favorite camping spots ever. Once you pass the Spring Creek Campground you will come up on a BLM sign and grom there until you can't drive anymore you can camp. All the way up and past the lake. I camped near the front because I got there late and had to find a spot quick before dark.
You are basically camping in the bottom of a canyon next to a fast flowing creek that is so peaceful. The canyon seems to only be about 150ft wide and shoots straight up on both sides. No cell service of any kind but that was honestly kinda nice to get away.
STARS STARS STARS at night... my goodness. Highly recommended. Only 30 minutes to Crested Butte too!
I camped at the spot below but I was right next to the road. You can continue up the road until you find the perfect spot. Even out in the open or in the valley at the top.