Mimatsu Masao Museum
184-12 Showashinzan, Sobetsu-cho, Usu-gun, Hokkaido
0142-75-2365 
April-October: 8: 00-17: 00, November-March: 9: 00-16: 00 
Open daily (January-March has irregular holidays) 
Admission fee: 300 yen for adults, 250 yen for elementary and junior high school students
* Business days and hours are subject to change due to the influence of Novel Cornavirus (COVID-19).
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He was experience the eruption of Mt.Usuzan in 1910.
After having served as a guide to the earthquake survey, he deepened his shaping to volcanology and earth sciences and kept recording afterwards and accurately recorded the uplift of Showa Shinzan.
In addition, He is a source discoverer of Toyako Onsen.