To view my book: https://guidebook.jolua.com/
This is a concept for the vault gate. In a normal environment those engines would be covered to protect them from sand. But for the cool factor, we let them exposed and animated. Also some of the gate additional gameplay elements that player interacts with: a console and some power transformer.
You can view the project artbook pages on the chief artist profile https://www.artstation.com/huzhongjie and also learn more about the game and the other artists involved.
You also find some sort of video below so you get a vibe of the game.