Trail Name: Green Ridge (standard loop)
Trail Location: Green Ridge State Forest - Flintstone, MD
Legality: It is A-ok to off-road here... Stay on the trail.
Trail Length: 18 mile loop
Rating (1-5): 1
Here is the Green Ridge web-site
Maryland DNR Forest Service - Green Ridge State Forest
Here is a vehicle use map I found for GWNF.
Here is a good printable map of the ORV trails