🇪🇨 Ecuador · Earthwork
Upano — Copueno Tributary Hypothetical Mound Field
Hypothesized Upano Formative vs modern agricultural if real · Hypothesized Upano (if verified) vs mechanized rice farmers
Hypothetical Copueno floodplain raised fields — 45 linear ridges on active floodplain 2.1 km west of verified cluster.