For at least 2,000 years, Nipmuc towns along the Towanucksett and Quinneticut Rivers called the area covering what are now South Shutesbury, NE Amherst and parts of Pelham "Sanakkamak", meaning "difficult land", according to the Indian Land Archives of Springfield (1660–1835), now housed at Cornell University. According to the same archives (pages 31–33), the land was named Sanakkamak "on accord of its many ponds, swamps, and streams" leading to steep slopes of Kunckquatchu (Mt. Toby) and Quaquatchu (Brushy Mountain). The northern parts of Shutesbury, as well as parts of Belchertown and Pelham along the former Swift River (now Quabbin Reservoir), were called "Kingyiwngwalak", meaning "Upturned land" due to the heavily titled bedrock of the area and many steep ravines draining to the east and south (Indian Land Archives of Springfield, Cornell Univ.).