CaveMC is a semi anarchy survival server with an enhanced vanilla feel. The whole overworld is underground so there is no surface at all. It uses custom world generation made by real Minecraft developers so the caves feel huge and full of biomes resources and structures.
Season 2 is live with a fresh start and a bunch of additions. Survival is brutal and you have to be smart to last.
There is also a big expansion called the Wasteland Dimension. It brings new gear to fight over plus massive mega structures with mysteries and valuable secrets. It also has its own currency with a new player driven economy and trade. A new spawn point and a custom generated map set the tone for the new challenges.

