Mount Usu

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Mount Usu
有珠山 Usu-zan
Viewed from the SSE.
Highest point
Elevation 733 m (2,405 ft) [1]
Coordinates 42°32′28″N 140°50′35″E / 42.541°N 140.843°E / 42.541; 140.843
Mount Usu is located in Hokkaido
Mount Usu
Mount Usu
Parent range Nasu Volcanic Zone
Topo map Geographical Survey Institute 25000:1 壮瞥, 50000:1 虻田
Mountain type Stratovolcano
Volcanic arc/belt Northeast Japan Arc
Last eruption March to September 2001

Mount Usu (有珠山, Usu-zan[2]) is an active stratovolcano in the Shikotsu-Toya National Park, Hokkaidō, Japan. It has erupted four times since 1900: in 1910 (which created Meiji-shinzan[3]), 1944–45 (which created Shōwa-shinzan), August 7, 1977,[4] and on March 31, 2000. To the north lies Lake Toya. Mount Usu formed on the southern rim of the caldera containing the lake.

Mount Usu and Shōwa-shinzan are major tourist attractions in the Shikotsu-Toya National Park. A ropeway on Mount Usu takes visitors to viewing platforms overlooking Shōwa-shinzan. The 1977 eruption is mentioned in passing in Alan Booth's travelogue, The Roads to Sata. The 2008 G8 Summit was held near Mount Usu at Lake Toya.[5]

See also[edit]


  1. ^ Geographical Survey Institute topographic map 壮瞥, last access 28 May 2008
  2. ^ Teikoku's Complete Atlas of Japan, Teikoku-Shoin Co., Ltd., ISBN 4-8071-0004-1
  3. ^ 神沼克伊,小山悦郎 日本の火山を科学する 日本列島津々浦々、あなたの身近にある108の活火山とは? ソフトバンククリエイティブ 2011. ISBN 978-4797361308.
  4. ^ "Archived copy". Archived from the original on 2010-10-12. Retrieved 2010-10-28. , last access 28 October 2010
  5. ^ Japan's Selects Hokkaido for 2008 Summit, last access 28 May 2008

External links[edit]