Ok, let's see about adventure cave. I have nothing which fits 100% so the only solution is to surgically combine parts and see how goes.

Starting material:



Modifications (no animation yet):




The animation will probably consist in eyes inside the cave, + some skulls at entrance. But what bothers me is the upper part, original is rather green, after playing with settings, becomes closer to bottom but textures now vary.


Another possible model to start from:




Or, already done, but with a different animation color (much darker)




Ideas? Or different models?