 By late in that century there was enough permanent settlement that Glastonbury was incorporated as a separate town in 1693.The Rocky Hill–Glastonbury ferry was at the time the only river crossing between the two communities, and High Street, extending east from the ferry, is the oldest road in Glastonbury.South Glastonbury developed as the town's first village, spurred in part by the development of grist and saw mills on Roaring Brook to the east.