"Kojiki" explains that the entrance to the Nenokuni was Yomotsu Hirasaka (the slope that leads to Yominokuni, the land of the dead), which was the same entrance to Yomi (also known as Yominokuni) (see the section of a visit to Nenokuni in the article of the myth of Okuninushi [chief god of Izumo in southern Honshu Island, Japan, and the central character in the important cycle of myths set in that region]).
根の国は、その入口を黄泉と同じ黄泉平坂（よもつひらさか）としている記述が『古事記』にある（大国主の神話根の国訪問）。