🇨🇱 Chile · Hydraulic works
Old Aqueduct
Harappan (2600–1900 BCE) · Harappan
Old Aqueduct in Coquimbo, Chile is a Harappan (2600–1900 BCE) hydraulic attributed to Harappan culture.
🇨🇱 Chile · Hydraulic works
Pica Oasis Socavones and Geoglyphs
Formative to Modern (Alto Ramírez to Colonial) · Tarapacá / Pica-Tarapacá / Hispanic oasis
Pica (1,350 m, 20°29′21″S 69°19′46″W) is the only living oasis of the Atacama with active filtration galleries (socavones) tapping the Pica Aquifer; study by Lictevout et al.
🇵🇪 Peru · Hydraulic works
Qhapaq Ñan – Andean Road System
Inca Empire with antecedents Wari/Tiwanaku (~1000–1532 CE; Inca 1438–1532 CE) · Inca (with pre-Inca antecedents)
The backbone of Tawantinsuyu, Qhapaq Ñan runs 6,000 km along the Andean crest from Colombia to Chile, with east–west transversal roads totalling over 23,000 km.