Caral–Supe (also known as Caral and Norte Chico) was a complex pre-Columbian era society that included as many as thirty major population centers in what is now the Caral region of north-central coastal Peru. The civilization flourished between the fourth and second millennia BCE, with the formation of the first city generally dated to around 3500 BCE, at Huaricanga, in the Fortaleza area. From 3100 BCE onward, large-scale human settlement and communal construction become clearly apparent. This lasted until a period of decline around 1800 BCE. Since the early 21st century, it has been recognized as the oldest-known civilization in America, and as one of the six sites where civilization separately originated in the ancient world.
This civilization flourished along three rivers, the Fortaleza, the Pativilca, and the Supe. These river valleys each have large clusters of sites. Farther south, there are several associated sites along the Huaura River. The name Caral–Supe is derived from the city of Caral in the Supe Valley, a large and well-studied Caral–Supe site.
