I gave it this prompt, which I didn't spend any time refining, and it came up with a world that does a pretty good job of matching it.
> A world made of very strong rock that has lots of rain. The rain contains acid, which wears the rock down. There is lots of soil, but it s in very thin layers because the world is relatively new.
https://skybox.blockadelabs.com/215b2684ceac6daac1958d020e24...