Translations:Copper/25/en

By default:
 * Extreme Hills, Extreme Hills Edge, and Extreme Hills with Trees between Y levels 80 and 128, with a maximum of 5 veins per chunk. It can replace stones, dirts, grasses, sands, sandstones, gravels, and grasses.
 * Hell between Y levels 0 and 128, with a maximum of 10 veins per chunk. It can replace netherracks.
 * Sky between Y levels 0 and 128, with a maximum of 10 veins per chunk. It can replace endstones.