Bling Posted October 7, 2012 #1 Share Posted October 7, 2012 What's causing this manhole cover to dance? [media=]http://www.youtube.com/watch?v=KwpUZV6EH6Y[/media] 1 Link to comment Share on other sites More sharing options...
Mnemonix Posted October 7, 2012 #2 Share Posted October 7, 2012 That's one of the best things I've seen here, thanks for sharing 1 Link to comment Share on other sites More sharing options...
coldethyl Posted October 8, 2012 #3 Share Posted October 8, 2012 I'm going to guess some kind of air pressure. Because if it's music it had to be before the early 1990's. 1 Link to comment Share on other sites More sharing options...
tipotep Posted October 8, 2012 #4 Share Posted October 8, 2012 Some sort of air / gas pressure from the drains below . Still cool TiP. 1 Link to comment Share on other sites More sharing options...
Bling Posted October 8, 2012 Author #5 Share Posted October 8, 2012 I'm going to guess some kind of air pressure. Because if it's music it had to be before the early 1990's. I didn't like the music much either! Link to comment Share on other sites More sharing options...
wolfknight Posted October 8, 2012 #6 Share Posted October 8, 2012 Gas pressure or a damn good stunt Link to comment Share on other sites More sharing options...
Ashotep Posted October 9, 2012 #7 Share Posted October 9, 2012 Very bad case of gas. Wouldn't want to be walking by when it cut one. 1 Link to comment Share on other sites More sharing options...
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