Board Thread:Suggestions forum/@comment-142.0.23.105-20151128175806/@comment-25661985-20151129074640

LOTRMod wrote: Unfortunately, this is not possible (without editing base classes [which is forbidden by Forge]). Can we make different types of lava in order to do this? I think we can, and Mordor lava, even a new normal lava will needed in the future. Now lava can destroy every things, when One Ring is introduced, at least we need to avoid this.

Maybe you could solve this by introducing a new type of lava? Just like that you did to horses, middle-earth lava will only generate in middle-earth.