Tall Rocks

What Asset(s) would you like to see included within TaleSpire?
Taller rock formations - like the impressive basalt formations you see in Iceland. These will allow for deep canyons and cavern systems. Normal walls are one high, and while the existing cliff walls are good, I would like some assets with some more verticality to it.

Additional Thoughts/Details

Take a look at the image above and (gestures vaguely) imagine what you could build.

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Note: This has been copied over from GitHub.