Quick Cave

 I made a cave for my start area.

Here I used "bend" and "noise" to create modular parts

I made some simple panels to create the cave interior.  This was very easy - a case of a few simple modifiers.  While these parts may seem dumb for using so polygons it is actually ideal for vertex painting and adding height variance.

Here is the view from the start - I may leave in the pillars (which were originally place holders)

I'm planning on having some sun rays coming through the sky light & have the starting position dappled in light - Should look ok in a video sequence.

Here is the original idea - An ancient abandoned valley /village

I had to refine the idea a lot I can see from reviewing some original ideas.  I maybe could of made this if I didn't have my focus on the Colossus and it was more environment focused.