Archaeological testing investigations to determine National Register of Historic Places eligibility were conducted by the St. Louis District, Corps of Engineers, during the summer of 1983. While three sites were originally to be tested, only one was completed, and another partially tested. Changes in plans resulted from the realization that the sites could be preserved in place. Initial SLD surveys of the project area indicated that not only did the sites have Archaic, Woodland, and Mississippian components, but all three were probably partially buried by colluvial slope wash. The testing confirmed the buried status of the Neck-in-the-Woods site (23ST196), which is considered to be eligible for nomination to the National Register. The partial testing of the Wild Bob site (23ST204) may also indicate buried cultural deposits, although investigations were inconclusive. Project plans call for covering the sites with a layer of fill material, thereby preventing adverse impacts to the sites and precluding the necessity for further work at these sites.