Map Info:
You start in a shelter, deep below the ground. You find a chest with some basic supplies to get you going.
There is no getting out of the cave - but inside it you will find everything you need to survive. The map offers many challenges. You will eventually find caves and dungeons within the map, where you can find valuable loot. The loot is not unguarded, however, so keep your guard up!
There are achievements within the map, some of which are essential for your survival. Don't worry - even if it's underground, you still can find (and also grow) wood, and other crops.
This map supports multiplayer. However, make sure you enable command blocks in the server properties!