3. Landscape changes should appear natural

"As regards the construction of artificial hollows, mounds and bunkers, the model should be the natural sand-dune country which is found near the sea…... If the sand-dunes be taken as the natural and perfect model, it follows that their characteristics should be reproduced.”

Harry S. Colt “Some Essays on Golf-course Architecture” 1920

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“The acid test is whether it appears obvious within a glance where artificial work has been done…. An artificial hill which is pleasing and natural to the eye will cost about six times more than a hill considered purely from a scientific point of view.”

Tom Simpson “Golf Architecture. The Game of Golf” 1931