This mod is now deprecated and merged with `AbandonedRuins_updated_fork`.
Mods introducing new content into the game.
Map generation and terrain modification.
Is there some tool to use to select and save Custom ruins? and in a way that they can be exported to be used in a Dedicated server?
I have no idea about this. I only fixed it. I guess he manually created them by trying out in a simple Factorio setup, means on this mod and then directly into debug world.
Otherwise please ask the original author how he did it: https://mods.factorio.com/mod/AbandonedRuins
