i dont think i ever explained what I was trying to do with the curve, i thought to make the curve and then since it followed the cliff perfectly i could then make the platforms to follow the curve of the mountain better.
but now that I think about it, I'm going to need a different approach since the platforms that the houses are on would be made of wooden planks

but i'd still like to know what you can do with a curve that's stuck on a surface...