The overpass is a long sandbar with about 7,000 pine trees, which is3.2 kilometers long and 100 meters wide. In the Nippon Miyatsu Bay, northwest of Kyoto Prefecture, Japan. It is north-south, with the Asu Sea (Inland Sea) to the west and Miyatsu Bay (Sea of Japan) to the east. Because it is located in Kyoto Prefecture, the seat of the emperor and the national government in the old era, there are ancient tombs found nearby, and the burial items excavated have considerable historical research value.