The sites are in Sommerheim Park, one of the few undeveloped areas of the Lake Erie shoreline, in Millcreek Township.

Artifacts include an especially dense concentration of Late Archaic remnants as well as a nineteenth-century dump created after European settlement.

[2]: 2  Various stone tools and evidence of Late Archaic houses have been found, indicating that the area may have been occupied seasonally by a fishing and hunting people.

[2]: 4 Local archaeologist C. Frederick Sanford's discovery of Plano points in Sommerheim Park in 1975 led to the first recognition of the area as a possible archaeological site.

[2]: 5  The district's location on a lake bluff is likely to be the reason that it has survived; many similar sites likely once existed along nearby beaches and ridges, but they have likely been destroyed by the expansion of Erie and its suburbs and by quarrying for sand and gravel.