I've seen a moderate interest in Dune's Rock Face .tgd (loaded with populations... ;)) so I gathered all the nodes less color shaders into one group as a .tgc that can be connected to however you like.
I take no credit for any of the creation of the file, only that I put it into a single package. Hope it works for you as well as it does for me!
So here is a simple tgd to set up your clip. Add surface layers for color according....
Or add Dune/Ulco Rockface 3 for Terragen Free from Topic More Rock in File Sharing. (no objects, maybe grass)
Link for tgd https://planetside.co.uk/forums/index.php?action=dlattach;topic=22041.0;attach=66948
My thoughts exactly - and be aware that the base terrain PF settings have a profound effect on the clip's effect as well. Play with feature size, mins and maxes, and displacement. Oddly sometimes less is more.