The Upano Valley earthen platforms and roads were originally built by groups of the Kilamope and later Upano cultures.

Rostain 2024: platforms and roads built by groups of the Kilamope and later Upano cultures

what the source states

The main text states that the original building of the earthen platforms and roads "was carried out by groups from the Kilamope and later Upano cultures".

what we infer

Cultural attribution by the excavating team, resting on the stratigraphic sequence it re-examined at the Sangay and Kilamope sites; its supplementary text S2 lists the Kilamope as the first mound builders and says the Upano built earthen mounds and were contemporaneous with or successors of the Kilamope.

limitations

• Author-accepted manuscript; the dating sequence behind the attribution "was recently revised and will be presented in a subsequent paper" (supplementary text S2, p. 23).