> I'd say that shape-wise, you're off to a good start so far.
>

   Thanks!

> Your material texturing probably needs to have some more ---
> differentiation. In my mind's eye, I conceive of layers and strata
> and veins of different minerals and sediments, and oxides, and
> benthic layers, etc. The homogeneous red-rust-brown looks like
> someone sprayed it with pigment or rusty water.

   Yes, it was just the first texture I came up with... but making
something remotely credible in geological terms is going to be difficult.

> as for real caves - browse around and see what _you_ think.
> https://www.google.com/search?q=caves

   I already did that search, and it's bookmarked for reference. :)

--
jaime

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