Morrison Mounds is a historic site located north of
Battle Lake, Minnesota, United States. It consists of 22 Indian
burial mounds that were built beginning in 800 B.C. There are 20
conical mounds, one flat-topped mound, and one elongated mound near
Otter Tail Lake. This site has the oldest
radiocarbon date for any mound group in the state of
Minnesota.[3] However, its construction is similar to other mound groups in the area which suggests they are all from the same social group that built them over a period of time. Similarities include a central burial pit, logs over the burial pit, and the possibility of partial
cremation on-site. The site was listed on the
National Register of Historic Places in 1973.[1]