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Scary underworld (Tälligrat tunnel) - YouTube
https://www.youtube.com/watch?v=gEJDbUYG4UE
Dark tunnel between Fieschertal & Märjelatal valleys under Eggishorn mountain (Valais, Switzerland). All along the 1km long tunnel water streams aside, puddl...
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Analysis of the Fujinuma Dam Failure - YouTube
https://www.youtube.com/watch?v=LlrsohtenWE&feature=related
The Mw=9.0 Tohoku Earthquake resulted in failures of the two dams impounding Fujinuma Lake, in Fukushima Prefecture. After the event, several mechanisms were...