Survival maps are usually about managing to survive with limited resources. They are essentially a custom experience of the survival mode in vanilla Minecraft. They often have certain objectives to complete as well.
Pillar is a custom survival map that was inspired by Skyblock Survival and Neus. It has various locations such as mines and dungeons with glorified loot of every kind like brewing to enchanting to just plain weapons.
This map is inspired by Skyblock, but shifts the focus onto adventure, and its many challenges. There is much to be explored in this seemingly empty map. Resources are scarce, and exploration through the foggy empty space, is required if you want to survive.