I think we can still work with the spirit of the solution. The main issue is that the lava will break the concrete. The solution is pretty simple. If we take some buckets of water we can pour it into the volcano creating a layer of obsidian. Obsidian is much harder and will easily contain the magma.
I think we can still work with the spirit of the solution. The main issue is that the lava will break the concrete. The solution is pretty simple. If we take some buckets of water we can pour it into the volcano creating a layer of obsidian. Obsidian is much harder and will easily contain the magma.
Minecraft logic
Just get a bucket of water, ffs!