Rare affordable building lot just outside of Lyons within easy earshot of the North St. Vrain River! Adjacent to jointly-owned 1.3 acre outlot with river frontage on west side, and Boulder County open space on the east! Nearly flat, circular building envelope is located approximately straight ahead as you approach lot (i.e. below road as it ascends to neighboring homes). Great solar access! The "For Sale" sign is approx. in the center of the building envelope which is a 73 ft circle.