First Fork Road (Forest Road 622) branches off US Hwy 160 about 22 miles west of Pagosa Springs. Only the first half mile of this road is plowed during the winter. The Pagosa Springs snowmobile club has permission starting in the winter of 2010 / 2011 to groom the upper part of this road and up West Monument Road (Forest Road 630).
The attached maps show the first six miles of the road that is groomed periodically by the snowmobile club.
Note: The "kmz" file below can be viewed in Google Earth.