@Karsten
Does the resolve of the concept (not the animation) can be replicated to any start number drawing of "flat" Valley (s) / Mountain(s)
Supposed that each little surface resulting are plane for the moment! :)
Difficuly will surely to take any start form of drawing!

@Al : works like a charm! Bravo for the effort!





Nodes'Image of the "white" folding example! :)