Thanks for sharing, Veil. It is really very interesting. The sound has a special tonality that hurts my ears. Even if I do not stand there I can feel strong vibration and shaking caused by that sound or action whatever.
In my opinion it is no "natural" sound, rather technical, sounds like in tool or machinery factory, but not really as there are dump and deep tonalities as well that really could come from deep within the earth.
Hope you do not mind sharing my feelings?