Some of the work has taken place in the mountain city of Minami-Uonuma, in Niigata prefecture north of Tokyo.

其中一些工作是在东京北部新潟县的南鱼沼市开展的。

Archaeologists do not know exactly what caused the Inca to leave their mountain city: there is no evidence that the conquering Spanish attacked or ever even found the settlement.

考古学家不能确定什么引起了印加人离开他们的山城，没有证据证明西班牙侵略者入侵过，更不能证明他们曾发现过这座城。