I’m not sure if you’re referring to the Conquistadors, but this site was abandoned quite a long time before that.
All the Upano artefacts dated by Rostain’s team are older than 1500 years, however, suggesting the settlements in the valley were abandoned after this time, long before the colonial era. Why isn’t clear, but the team has found layers of volcanic ash, so it is possible a series of eruptions forced people to leave the valley.
Sure, but there is no evidence of that here.