Topper is an archaeological site located along the Savannah River in Allendale County, South Carolina, United States. It is noted as the location of controversial artifacts believed by some archaeologists to indicate human habitation of the New World earlier than the Clovis culture, previously believed to be the first people in North America. Artifacts at this site may predate Clovis by 3,000 years or more. The primary excavation has gone down to the 50,000 B.C. level, searching for any other archaeological evidence. Until increasing challenges in the first decade of the 21st century to the Clovis theory based on this site and others, it was unusual for archaeologists to dig deeper than the layer of the Clovis culture, as they then believed that no human artifacts would be found older than Clovis. Among the objects from the "pre-Clovis" stratum dated to 16,000-20,000 years BP, is a large piece nicknamed the "Topper Chopper", which offers some of the most compelling evidence for human agency, including bifacial flaking of the edge.

• http://en.wikipedia.org/wiki/Topper Site