In 1896, a decision was finally made on this issue that the top of Mt. Hayahi-no-Mine, which is located behind Udo-jingu Shrine, is the legendary place of 'Aira no Yamanoue no Misasagi,' the tomb of Ugayafukiaezu.
明治29年、鵜戸神宮背後の速日峯山上が「御陵墓伝説地吾平山上陵」と定められた。