I wanted to create this article as I am not ready to produce a Game-Post, yet. Below, are the two images that show the progression between Version 1 and 2 of the Bunker-Hatch from my project. (More on this in the coming months.)
You can see that there is the addition of pipework and hatch-materials; the modelling is better and ready, hopefully, for the final version...Number 3.
As this develops, and more is produced, I will add it all to a Game-Project-Post. You can't deny, the thought behind the steps 'up' is golden, you've got to think of having ease when reaching your bunker, ey?