I have been experimenting with the idea of mixing two slightly different alpine nodes (same seed) and a strata/outcrops node using a height field curve node and made decent progress to resembling grand canyon-like features. Using the intersect underlying-favor depressions all default settings but there is too much sediment all over so i am trying to figure a way to reduce that while keeping the sediment flow in a realistic manner. Much work to be done still as in more strata colors, shrubs and brighter lighting.