This is a complete underground fortress called "The Bunker", with a series of rooms and passages for living and working underground. There are two different Vault (round and square) passages with unlocking wheels that can be rotated to unseal the doors so that the doors can be opened. A Turbine Powered generating fan in the Silo can be rotated in the timeline. Wall Fans can also be rotated in the timeline.
 
You get the complete multi-level scene supplied with rooms and passages joined, ready to add to your stage for immediate use. Each room and corridor is a sub-prop with some walls set as subprops so that they are easily hidden for camera angles. The Bunker includes the Silo, Office, Working Area, Sleeping quarters, mechanical room and various passages.
 
You also get the single props and building parts for adding to the supplied scene or for use in your own projects. You can also build more add-on rooms to your own specifications.
 
Supplied in 3 folders:
Artur_G/The_Bunker/Scene or Singles or Building_Parts
 
Note: 
Video created in Unity and provided for creative inspiration.