End of Service: Due to declining interest in the site, I will be shutting down Satellite Sightseer in the near future. If you're interested in purchasing the database, sans user data, please contact admin@satellite-sightseer.com with your offer. The domain names will be redirected to a static page until they expire.
Mount Unzen
It was very active in late 18th century and 1991.In 1991, it created small dome by explosion then its collapse and explosion produced huge pyroclastic flows and ash-cloud surge that raced 4-5 kilometers, at speeds of 120-200 km/hour.


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