🇵🇪 Peru · Pyramid
Sechín Alto Principal Platform — Casma
Initial Period, c.1800-1000 BCE (Sechín–Casma) · Andean (Casma–Sechín)
Sechín Alto in Casma Valley (Ancash): huge U-shaped platform compound 300×250 m, 44 m high, with atrium and sunken courts. Excavated by Julio C.