What is the source of this strange metallic noise?
Is it someone clashing two pieces of metal together or a sign of the upcoming apocalypse?
As explained by the uploader of the strange noise video:
[quote_box_center]This strange noise was over heard by large parts of southern Wisconsin on April 2015 The sound heard for 5 minutes or more. No aircraft was seen and the source of the noise remains unknown. Ufo? HAARP experiment? Meteorite?[/quote_box_center]
So what’s your bet?