Premium lot in Hickory Trials Developed Subdivision. Several homes have already been built in this upscale subdivision with protective covenants. Carterville School system, in Williamson County. If you want to build your dream home, this is a place you should view. Picturesque. Quiet. Serene. Lot # 1 is one of only 2 left in the neighborhood. Lot 1 is the entry premium lot to the subdivision. Has elevation. And some mature trees for shade.