Hello!

First of all sorry for the bad English.

I am trying to replace the lava in the overworld caves with a different type of liquid, but the flowing lava from the pockets still appears in the caves. I tested this without other mods and turned off all caves except floored caverns/liquid caverns and tried to use this option:

        # The block used for lava generation at and below the Liquid Altitude.
        #     Defaults to regular lava if an invalid block is given.
        # Default: minecraft:lava
        S:"Lava Block"=minecraft:water

Underground lava lakes are replaced with water correctly, but as I said, the flowing lava from the pockets on the walls still appears.
Is there some way to fix this?

Minecraft 1.12.2
Forge 14.23.5.2854
Bettercaves-1.12.2-2.0.4

P.S. And many thanks for the cool mod by the way!

That's a decoration feature in base minecraft. Unfortunately, Better Caves only focuses on cave generation, and doesn't handle the features inside the caves. I personally don't know of a mod that changes this, but you might even be able to remove it with a datapack.

The "Lava Block" feature doesn't mean its blocking out lava, it means what minecraft block is being used instead of the lava block (in this case its a fluid). So from what you've mentioned, it's working correctly.

Ok, I got it!

Eventually I added a short script using BiomeTweaker. If someone comes across a similar problem for 1.12.2, then something like this can be used:

Lava = forAllBiomes()
Lava.removeDecoration("LAKE_LAVA")
Lava.removeFeature("LAVA")

However, I think it will be great if the option to completely replace the lava appears in the Better Caves. This would be very helpful for accurate customization.

This is intended behavior. Lava lakes can be removed via BiomeTweaker in 1.12 or datapacks in future versions.