Five environmental groups jointly filed a lawsuit today against the United States Forest Service to stop construction of a new road for off-road vehicles (ORVs) in the Oregon Dunes National Recreation Area (Oregon Dunes). The lawsuit challenges the Forest Service’s approval of the “Riley Ranch Access Project,” which involves building a 14- to 24-foot wide motor vehicle route through the heart of both an Inventoried Roadless Area and a section of the Oregon Dunes that has long been closed to motor vehicle use.