According to Nebraska History: "Kelso is located on a sand dune overlooking the Middle Loup River near the town of Mullen. It is important as a rare example of a little known Woodland culture of the Sand Hills, Panhandle, and eastern Colorado dating A.D. 500-1100."[2]
The archeological site was partially excavated in 1947, when the proposed Mullen Reservoir project was planned. This was "the only major excavation of a Woodland site in the Sand Hills proper. Approximately one-quarter of the Kelso site was excavated. Two hearths were uncovered, but storage pits or architectural ruins were not located. Artifacts included pottery, stone tools, animal remains, and a bone awl. The animal bone sample reflected an emphasis on smaller game. The site is somewhere between 950 and 1,350 years old."[3]
^"Sand Hills Archeology"(PDF). Archived from the original on August 24, 2003.{{cite web}}: CS1 maint: unfit URL (link). Includes photo of Kelso Site excavation in progress.
