- uvo.sci.hokudai.ac.jp
- Images and reports from the Geological Survey of Japan. Site is in English and Japanese.www.gsj.go.jp/~imiyagi/Works/Event/Usu2000/index.html
- USU VOLCANO, SW Hokkaido (42o32'N, 140o51'E) (6/01/00) The eruption continued, though the activity level has declined. Eruption cloud of white color is emitted from craters in the Kompirayama and West-Nishiyama area. Small explosions that were being observed in the West-Nishiyama in the late-April, intermittently take place just above the craters in the Kompirayama area, and cinders (or mud ) ...hakone.eri.u-tokyo.ac.jp/vrc/erup/usu.html
- Facts, photographs and links.www.gsj.go.jp/~tomiya/usuE.html
