11.9853°S, 76.9106°W.
Cajamarquilla is a vast adobe urban complex in the Rimac Valley east of Lima, occupied from roughly 200 to 1500 CE and reaching its peak between 600 and 900 CE under Lima culture and subsequent Wari influence. The site extends across approximately 167 hectares and includes plazas, residential compounds, ramped pyramids, storage cells, and cemetery zones — second only to Pachacamac as the largest pre-Hispanic city in the central Peruvian coast. Construction was overwhelmingly in tapia, a poured and tamped mud-wall technique, with adobe brick reserved for upper structures and ramps. Researchers including Louis Stumer in the 1950s and recently Pieter Van Dalen Luna have mapped successive occupational phases and documented mummy bundles in the burial sectors — including the 2021 recovery of a bound, rope-wrapped male burial dating to roughly 800 to 1200 CE.
The compound walls still rise three to five metres above the desert floor, casting long parallel shadows at low sun.