The Holly Bluff site (22 YZ 557), sometimes known as the Lake George Site, and locally as "The Mound Place," is an archaeological site that is a type site for the Lake George phase of the prehistoric Plaquemine culture period of the area. The site is on the southern margin of the Mississippian cultural advance down the Mississippi River and on the northern edge of that of the Cole's Creek and Plaquemine cultures of the South." The site was first excavated by Clarence Bloomfield Moore in 1908 and tested by Philip Phillips, Paul Gebhard and in 1949.