This server is called Survival Rocks and it is hosted by Lithos Network. It is a big survival world that goes 20 thousand by 20 thousand blocks and it runs on Minecraft Java 1.21.11.

The main world has normal survival and all the 1.21.11 stuff. On top of that there are special resource worlds for every dimension. These resource maps are randomized and they reset every month. That means everyone gets the same fair shot to find good loot and rare blocks since the map keeps changing.

There is also a full economy system so you can earn money and trade. The server has a leveling system too. When you level up you unlock extra perks like more land claims more houses or more warps so you feel stronger the more you play.

From what I see this server is focused on fair survival and long term play with systems that reward active players and keep the map from getting totally mined out.