They did it all across Europe during the war years.
When building submarine pens .. and the ocean encroached on their plans, or when heavy tanks
would mire in the wet ground of the Eastern Front, the Germans would drive electrodes in the
ground and by applying current would drive the water back.
That {40 year old} technology must be buried with the Pyramids I guess?
Jupiter, and the Mound Builders of Adam's County Ohioİ
http://jamesbowles.tripod.com/Jupiter/jupiter_moundbuilders.html
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j-bowles