If you channel the power of water , you can create incredible power to control the land. They did this on huge scales as well . When the dams did not work for area , the channels would help with redirecting to area being worked . Very Ingenious land development went on in the true ancient past of the world. https://satellites.pro/Madagascar_map#-17.583475,45.627047,17 , see it for yourself . Further information on all this will eventually come in a video presentation .
This is a very good find to show there worth upon the land for development, immense proof of it all.