These mounds have never been totally excavated but they were probably built between 1 and 1000 CE by the Hopewell culturemound builders, prehistoric indigenous peoples of eastern North America. The larger mound is about 12 feet high and 60 feet in diameter. A number of burials of important persons of the culture probably occurred in these mounds.
An incorrectly worded historical marker sign is located on [West Virginia Route 98] near the Veterans Administration Hospital. The sign errounously states the direction the mounds are relative to the sign itself, however the mounds are actually to the west, on the far side of the West Fork River, and not "Directly to the east..." The sign's entire inscription reads: "Oak Mounds - Directly to the east are two earthen, domed burial mounds. The larger mound is some sixty feet in diameter and twelve feet high. Excavations in 1969 revealed flint tools, pottery shards and skeletal remains of two individuals. Site dates to about 100 BC, late Woodland Period."