 Leaving Forks of Waters, U.S. 220 continues in a southwesterly direction on a roughly straight and level route passing the village of Possum Trot to the town of Monterey.Here, the route intersects U.S. Route 250.South of Monterey, U.S. 220 passes by Trimble Knob, a conical shaped hill that was an active volcano or diatreme 35 million years ago.