Is there any effective way to find extreme hills or extreme hills edge biomes for emerald farming since they are so rare?
41 Answer
The vanilla/survival mode way? Grab a bed, a pick, a weapon, and some torches and just start heading out in one direction until you find extreme hills. I would also recommend bringing materials with to create a nether portal, making the return trip 8x faster.
If you are not opposed to using external tools or mods, there are several tools which let you find biomes. The only one I know of off the top of my head (although there are several out there) is Amidst which creates a map of the biome layout in your specific seed. This will help you find that specific biome without having to create those chunks by exploring the area first.
