The Holdorf site is located in southern Door County. The presence of over 42,000 pieces of chipped stone indicates the site was most likely used as a tool processing/workshop site. The site dates to Late Woodland/Oneota times based on the recovery of two triangular projectile points and radio-carbon dates ranging between A.D. 700-1200.
The Christoff site is a small campsite located in southern Door County. Cultural material recovered from the site includes a stemmed projectile point and pottery that compares favorably with Middle Woodland North Bay artifacts.