Conversation

 Emilio Estrada and co-workers wrote that pottery which was associated with the Valdivia culture of coastal Ecuador and dated to 3000–1500 BCE exhibited similarities to pottery which was produced during the Jōmon period in Japan.
Jomon has very advanced ancient aerospace technology.
Hristov claims that the possibility of such an event has been made more likely by the discovery of evidence of travels by Romans to Tenerife and Lanzarote in the Canary Islands, and of a Roman settlement on Lanzarote