This area contains a network of forest service roads in the Colville NF which are legal for all vehicles, and a few actual trails.
The N and SW regions can be accessed by driving your ORV right out of Republic. However, the SE region, which has the best scenery, requires that you trailer your ORV to a staging area. The USFS in this area is rumored to be working on opening all of their roads in this region to WATV use, but at the time of this printing, they had not yet done so.
Highlights:
Fresh pine tree smells. Pretty flowers if they are in bloom. High likelihood of seeing wildlife. Mountain peaks with incredible scenery, 360-degree views. Easy, wide open riding without much risk of crashing.
Get details including directions, staging areas, maps, and difficulty levels in the UTV Guide to WA State.