The immediate environment of Pinson Mounds includes the Elijah Bray Site and the Johnston Site. The Elijah Bray Site, about six miles east of Pinson, has a similar date range to Pinson Mounds. The Johnston Site, about six miles west of Pinson Mounds, is more like Pinson in its ceremonial platform mounds, though it is much smaller. At Pinson, the summits of platform mounds were often covered with thin layers of brightly colored sand available locally. Platform mounds had flat summit surfaces and were not used as burial mounds. Important ceremonial events are assumed to have taken place on these summits, but archaeologists have not determined the exact nature of the ceremonies, and unlike platform mounds in the later Mississippian period, buildings were not constructed on the summits of platforms at Pinson. Conical mounds generally served as burial mounds, were somewhat cone-shaped, and were often built over graves excavated in the original ground surface. An unknown number of additional small conical burial mounds may once have existed as part of Pinson Mounds.