beside plenty cultures understood how to build mega-structures to a great degree of accuracy. drawing lines is something not as common, but in the greater scope

beside plenty cultures understood how to build mega-structures to a great degree of accuracy. drawing lines is something not as common, but in the greater scope of building things larger than one can see in a single view there's plenty example. moreover, measuring and contouring fields is likely one of the first activity tribes did when they stopped being nomadic.