The coastal site of Áspero, near the mouth of the Supe River, was a major Late Preceramic (Late Archaic) settlement linked to the Caral–Supe (Norte Chico) civilization. Its long occupation and monumental mounds illustrate how maritime resources supported complex coastal communities tied to inland valley centers.
The Sacred City of Caral-Supe developed as part of a network of urban settlements with monumental platform mounds and sunken circular courts, becoming a key inland node in the Norte Chico system that coordinated coastal–valley exchange and ceremonial life.
By the later third millennium BCE, Caral–Supe influence extended widely along Peru’s central-north coast (north toward the Santa River valley and south toward the Chillón valley), indicating a broad sphere of interaction among Late Archaic centers.
In the Chillón Valley near modern Lima, El Paraíso grew into one of the largest Late Preceramic settlements on the central coast. It is often treated as part of the late preceramic/“Cotton Preceramic” landscape that precedes widespread pottery and foreshadows Initial Period developments.
Around the turn of the second millennium BCE, Caral–Supe is widely described as entering a decline phase, with populations and activity shifting as other centers strengthened to the north and south and irrigation-based agriculture expanded in new areas.
Archaeological summaries place Áspero’s main Late Archaic (preceramic) occupation ending around 1800 BCE, aligning with wider transformations affecting Norte Chico coastal–valley networks.
Research syntheses commonly report that by roughly 1800 BCE many Caral-related settlements in the Supe Valley were abandoned, marking a major break from Late Archaic patterns of monument-focused civic-ceremonial construction on the central coast.
The Initial Period (often dated beginning about 1800 BCE) is defined by the introduction and spread of pottery and associated shifts in settlement and economy. On the central coast, early ceramics appear across a broad zone (including areas between Las Haldas and Lima).
At Vichama (Huaura valley, central coast), radiocarbon-dated occupation and building sequences show monumental architecture flourishing during an Early Formative phase (reported as 1800–1500 BCE), representing one pathway of transformation after Late Archaic Norte Chico florescence.
In the Casma Valley, Sechín Alto is dated to the Early Formative (commonly given as 2000–1500 BCE) and represents the growing prominence of the Casma/Sechín tradition as central-coast societies reorganized after the Late Archaic.
Cerro Sechín (Casma Valley) is generally placed early in the second millennium BCE (often cited around 1600 BCE) and is noted for its carved stone slabs. Its emergence signals new regional ceremonial and political centers developing beyond the earlier Supe Valley focus.
Peñico (Huaura region) is reported as founded between 1800 and 1500 BCE, near the end of Caral–Supe trajectories. It is interpreted as part of a reconfigured network linking coast, highlands, and interregional exchange during the broader transition into the Early Formative/Initial Period world.
Michael CarricoCollapse, transformation, and cultural succession on the central Peruvian coast (c. 1900–1500 BCE)