The Kuhn Spit Archaeological Site, listed on the National Register of Historic Places in 1978, is a highly significant prehistoric coastal site located near the mouth of Chimacum Creek on the eastern shore of the Olympic Peninsula in Jefferson County, Washington. This extensive shell midden represents centuries of occupation and resource harvesting by indigenous peoples, most notably associated with the ancestral territory of the Chimakum, a unique linguistic and cultural group distinct from their Coast Salish neighbors. The site serves as a vital physical record of long-term Native American habitation, seasonal resource procurement, and maritime adaptation along the shores of Port Townsend Bay prior to European contact.

Archaeologically, Kuhn Spit is invaluable for its exceptionally well-preserved stratigraphic layers, which contain dense deposits of shellfish valves, animal bones, hearth features, and diagnostic cultural artifacts such as stone, bone, and shell tools. These materials offer researchers a detailed window into the prehistoric diet, technology, and subsistence strategies of the region's early inhabitants, demonstrating how they successfully exploited both marine and terrestrial ecosystems. Due to its high degree of physical integrity, the site continues to hold immense research potential for addressing critical questions about Puget Sound cultural chronology, paleodemography, and environmental changes on the Olympic Peninsula over several millennia.