This Survival Underground Base is a minecraft map made for both PC and MCPE version.
Survival Underground Base is just like its name, an underground base made for surviving the waves of monster attacking you.
Your aim is to survive!
Or if you are not interested in handling the waves of mob, you could download the creative version and build away.
To download both map, aka pc and android/ios version just go to the youtube video and click more info to get links to the download files.
Also included in the video link is its shader and texture download files.