Mount Yōtei topographic map
Interactive map
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Mount Yōtei
In the 50,000:1 scale topographical map of the “Rusutsu” area published in 1920 by Japan’s Land Surveying Department, the mountain is recorded as "Shiribeshi-Yōtei-zan (Ezo-Fuji)". However, since the name was difficult to read, the town of Kutchan asked for it to be changed to Yōtei-zan. The change took place in the November 1969 topographical map published by the Geospatial Information Authority of Japan. Since then, the current name of Yōtei-zan has become established.