Natural winding approach roads

The most natural method of forming a winding Approach where the ground is gently undulating, is to follow, in some degree, the depressions of surface, and to curve round the eminences. This is an excellent method, so long as it does not lead us in too circuitous a direction, nor, as we before hinted, make the road itself too uneven. When either of these happens, the easy, gradual flow of the curve in the proper direction, must be maintained by levelling or grading, to produce the proper surface.