I car camped here on a cold rainy day. It was a fairly large campground with well spaced sites. Right by the entrance, there’s a loop and the sites inside the loop have no trees. Those sites aren’t very good, but there are better sites on the outside of the loop that have trees and some are along the creek. If you follow the road up the hill on the left there are a few more sites in thicker forest. I thought this campground was better than Peaceful Valley, which you drive past on your way up. The sites had the basics - fire pit, table, tent pads. There’s also multiple restrooms, drinking water, and paved road. The Middle St. Vrain trailhead starts on the west side of the campground. From there you can take the Buchanan Trail into the Indian Peaks Wilderness to access a large network of trails that can take you all the way over the divide. There’s also 4x4 trails from this trailhead too. I was here during off season, so it wasn’t too crowded but I can imagine this campground and trailhead are heavily used in summer.