http://dnr2.maryland.gov/publiclands/Pages/western/greenbrier.aspx 165 sites, 40 with electric hook-up (30 amp) No water/sewer hookups; water spigots located throughout camping loops. Pets allowed in Cedar and Dogwood loops of campground, trails, and day-use area (from Oct 1 - Apr 30 only). Stayed here in June of 2016 Site Details: We stayed in the Cedar Loop, site #7. Site was partially shaded, more private than many others in the loop, but still not very secluded. Nice and level. Hardly any space between sites. Definitely the tightest MD state park weve camped at by far. Luckily, we were there during the week, so it was not crowded at all, and reasonably quiet. Had we been there on a weekend, I can only imagine that the crowds and noise would have driven me crazy. Facilities/Overall Park: Bath house was fine; very average as far as bugs and cleanliness. Only 2 or 3 shower stalls, IIRC; never a wait while we were there, but I imagine the lines are long on weekends. There was a relatively easy hiking trail from the campground down around the lake, with some nice, quiet little spots for fishing. To get to the sandy beach area of the lake, we drove, since we had 3 kids and a ton of crap to transport. The lake area is very nice, with tons of picnic spots in the shade. However, every single picnic table was in use, and the beach was pretty crowded, and we were there on a Wednesday! I can only imagine how packed it would be on a weekend. Despite the moderate crowds, we really enjoyed ourselves, and I think I liked it even better than the lake area at Cunningham Falls. Surrounding Area/Attractions: We didnt venture outside the park, but there seems to be plenty to do in the area. Greenbrier is part of South Mountain Recreation Area, which includes a few other state forests, historic battlefield area, and even parts of the Appalachian Trail. Hagerstown and Frederick are also a short drive away, and both have everything you could want as far as restaurants, shopping, etc. are concerned. Overall, I liked the park just fine, but it didnt wow me. Again, the campsites were way too close together for my taste. The lake area was really nice, and I could see myself taking a day trip up for that, but not on a weekend. This is definitely one of the more popular state parks, and I would hate to drive over an hour to risk being turned away at the gate (beach frequently fills to capacity during the summer).