diff --git a/biomes.lua b/biomes.lua
index e69de29..11bb74f 100644
--- a/biomes.lua
+++ b/biomes.lua
@@ -0,0 +1,65 @@
+local c_water = minetest.get_content_id("default:water_source")
+local c_air = minetest.get_content_id("air")
+local c_stone = minetest.get_content_id("default:stone")
+
+
+local c_sweet_pod = minetest.get_content_id("dfcaverns:sweet_pod_6") -- param2 = 0
+local c_quarry_bush = minetest.get_content_id("dfcaverns:quarry_bush_5") -- param2 = 4
+local c_plump_helmet = minetest.get_content_id("dfcaverns:plump_helmet_4") -- param2 = 0-3
+local c_pig_tail = minetest.get_content_id("dfcaverns:pig_tail_8") -- param2 = 3
+local c_dimple_cup = minetest.get_content_id("dfcaverns_dimple_cup_4") -- param2 = 0
+local c_cave_wheat = minetest.get_content_id("dfcaverns:cave_wheat_8") -- param2 = 3
+local c_dead_fungus = minetest.get_content_id("dfcaverns:dead_fungus") -- param2 = 0
+local c_cavern_fungi = minetest.get_content_id("dfcaverns:cavern_fungi") -- param2 = 0
+
+
+local c_dirt_moss = minetest.get_content_id("dfcaverns:dirt_with_cave_moss")
+local c_dirt = minetest.get_content_id("default:dirt")
+local c_cobble = minetest.get_content_id("default:cobble")
+local c_cobble_fungus = minetest.get_content_id("dfcaverns:cobble_with_floor_fungus")
+
+--dfcaverns.spawn_tunnel_tube_vm(vi, area, data, param2_data)
+--dfcaverns.spawn_tower_cap_vm(vi, area, data)
+--dfcaverns.spawn_spore_tree_vm(vi, data, area)
+--dfcaverns.spawn_nether_cap_vm(vi, area, data)
+--dfcaverns.spawn_goblin_cap_vm(vi, area, data)
+--dfcaverns.spawn_fungiwood_vm(vi, area, data)
+--dfcaverns.spawn_blood_thorn_vm(vi, area, data, data_param2)
+
+-----------------------------------------------------------------------------------------------------------
+-- Coal Dust
+
+local test_biome_floor = function(area, data, ai, vi, bi, param2_data)
+	if math.random() < 0.25 then
+		data[bi] = c_dirt
+	else
+		data[bi] = c_dirt_moss
+	end
+	
+	if math.random() < 0.1 then
+		--data[vi] = c_plump_helmet
+		--param2_data[vi] = math.random(0,3)
+		data[vi] = c_cavern_fungi
+	elseif subterrane:vertically_consistent_random(vi, area) < 0.002 then
+		subterrane:stalagmite(vi, area, data, 6, 15, c_stone, c_stone, c_stone)
+	end
+end
+
+local test_biome_ceiling = function(area, data, ai, vi, bi)
+	if subterrane:vertically_consistent_random(vi, area) < 0.002 then
+		subterrane:stalactite(vi, area, data, 6, 20, c_stone, c_stone, c_stone)
+	end
+end
+
+-------------------------------------------------------------------------------------------
+
+minetest.register_biome({
+	name = "dfcaverns_test_biome",
+	y_min = -2000,
+	y_max = -300,
+	heat_point = 50,
+	humidity_point = 50,
+	_subterrane_ceiling_decor = test_biome_ceiling,
+	_subterrane_floor_decor = test_biome_floor,
+	_subterrane_fill_node = c_air,
+})
diff --git a/init.lua b/init.lua
index 846ed0e..256e5d9 100644
--- a/init.lua
+++ b/init.lua
@@ -31,6 +31,8 @@ dofile(modpath.."/trees/nether_cap.lua")
 dofile(modpath.."/trees/goblin_cap.lua")
 dofile(modpath.."/trees/tower_cap.lua")
 
+dofile(modpath.."/biomes.lua")
+
 minetest.register_ore({
 	ore_type = "vein",
 	ore = "default:lava_source",