function default.register_ores()
	minetest.register_ore({
		ore_type       = "scatter",
		ore            = "default:dimondblock",
		wherein        = "default:stone",
		clust_scarcity = 20 * 20 * 20,
		clust_num_ores = 5,
		clust_size     = 3,
		y_max          = -5000,
		y_min          = -31000,
	})