Gravel sites, we camped in the Tamarask campground. Right on the water in a desert setting! Even with antennas, our Verizon aircard and phone did not work. Great place if you are self contained. We camped here in a Fifth Wheel.
Boysen encompasses a large lake with several campgrounds, we stayed at the Tough Creek facility, which is about 10 mi. N. of Shoshoni on Hwy 20. Tough Creek is a minimalist-type place, no hookups, lots of room, a few trees. Only facilities are tables, BBQs, toilets and a little playground equipment for kids. Primarily, this is a campground for boaters & fishermen, but it worked well as an overnight for us. They told us it can get hot, cold and windy, but was OK when we arrived in August. This is some pretty backwoods country, podner! We camped here in a Motorhome.