The two minute and 21 second video was reshared by another YouTube channel today.
Comment: The footage was originally published in January, 2018.
It is the latest in a string of unusual noises to heard from the sky worldwide - with unusual hums and horrific "trumpet" noises.
Scientists have been theorising what is causing this noise, with theories ranging from shifting ice to distant storms.
Krupinski shared the video of him standing in a snowy landscape, which is silent apart from a constant low buzz - and a passing snowmobile.













Comment: See also: The annual Perseids: Astronomers prepare for Earth to 'plow' into fiery meteor shower