First I'll just say that the Rothrock campsites should probably each be listed separately, rather than as a group; they are very spread out throughout the State Forest and each is a different experience. This review will be for site 002 Colerain Road.
This site is accessed by driving up a bit of a winding dirt road up the mountain. It's easy enough during the summer, though the road is narrow and you've got some sharp bends depending on which way you come from. This road is not safe to access in the winter in my opinion.
The parking is just right off the road, and there's a picnic table and large stone fire ring near the parking. There's a small path further up the hill into the woods where there is a tent pad, another fire ring and another picnic table. There are also a lot of flat spots nearby for additional tents to be set up.
Just behind the upper tent site is the top of the mountain, and the site has their own private overlook to the valley below. The site is pretty remote, though there were vehicles and the occasional biker coming up the road. Traffic may have been busier than usual the weekend we went because there was the Mid Atlantic Overland festival nearby at the same time. At one point a family parked in the campsite's parking to start a walk... (there's a better trailhead up closer to Indian Lookout they should have used).
No hookups, water, bathrooms, etc; its fully primitive camping here. Cell coverage was fine on Xfinity Mobile (Verizon).
These sites used to be totally free but they're now $10 a night. You still need to book a while out if you want to be here on a weekend, especially during the fall when Penn State is playing.