Summary

Did a plane cut to remove the bubble pools (thank you LIfeburn) from base for use with other terrain such as wargaming mats, rigid insulation / neoprene mat cavern tiles, etc.

The cavern tile in photo was created with DM Scotty's Tilescapes #14 technique (on youtube -- can search for it).

Other scatter terrain is Hirst Arts Water Cavern Mold #82.

There is a small hole under one of the pillars / bubble pools on one of them, after I plane cut it with Mesh Mixer. I printed with supports, no problems.

Base Coat: Espresso Brown.
Sponge / Stipple Brush Coat (Light): Burnt Sienna
Spong / Stipple Brush Coat (Heavier): Cocoa (some dry brushing on 2nd pass)
Dry Brush with very dry brush: Cocoa mixed with Snow White.

(All Americana Paints mentioned above except for Espresso -- that's Home Depot).