When the Moosilauke Ravine Lodge is open, you can drive to near the lodge, and ski on just the trails. Once the lodge is closed for the season, you have to ski (or walk) up the road to the trails.
The Al Merrill Ski Loop is a loop with the Asquam Ridge Trail, which is narrower and steeper, so it is best done as an out-and-back along the switchbacks or skinning up the steep northern section of the Al Merrill Ski Loop. In winter, Ravine Road is closed to all motorized vehicles, and used only by snowshoers and skiers.
Ravine Road is wide and easy to ski. The Al Merrill Ski Trail
is cut for backcountry skiing, but the road is a little overgrown in places. At the turnaround, near the top, there is a great lookout point from which you can see both the south summit and the main summit of Mount Moosilauke.