One of the Finger Lakes… Canadaigua Lake … What the H-ll might this be?👀🤔
(media.greatawakening.win)
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I saw the procedure once, they make a case, pump out the water, then pour the concrete. It's this what you mean? But its a complete other think doing such a big structure... one has to consider the pressure of all that water also. What material would be used to make such a huge underwater building first to afterwards do it in concrete?
dont really know but it may not be concrete either. guess we need to wait until someone investigates...??