A “growl” or a “howl” coming from the sky or from the earth has been recordered in Cloquet, Minnesota, on April 22, 2012.
It’s not a video actually but just a sound recording. The sound seems to be genuine.
From the uploader’s comments:
…We asked both my great aunt Ruthie (70 years young) and both my mother and aunt about’ the video the next day. They were just as confused as we were and said they have never heard that sound before, and couldn’t explain what it was!…