We're about to build our fifth server. Our youngest had the idea of a world that is entirely underground, but that also has variety. So biomes, but maybe smaller versions, would still generate connected by a series of caves. There would be no outdoors or above ground. There might be some ambient light, but not much. Growing things would be a challenge. Mobs would be everywhere. And no sky to be seen. There is an older plug-in that seems to do this. Any chance of a resurrection? https://www.curseforge.com/minecraft/bukkit-plugins/subterranea Thoughts?