diff --git a/biomes.lua b/biomes.lua
index eb84db1..31362d1 100644
--- a/biomes.lua
+++ b/biomes.lua
@@ -127,12 +127,6 @@ subterrane:register_cave_layer({
 	perlin_wave = perlin_wave_lava,
 })
 
---subterrane:register_cave_layer({
---	minimum_depth = dfcaverns.config.lava_sea_min,
---	maximum_depth = dfcaverns.config.ymin,
---	cave_threshold = 0.3,
---})
-
 dfcaverns.can_support_vegetation = {[c_sand] = true, [c_dirt] = true, [c_coal_ore] = true, [c_gravel] = true}
 
 dfcaverns.place_shrub = function(data, vi, param2_data, shrub_list)
diff --git a/biomes/underworld.lua b/biomes/underworld.lua
deleted file mode 100644
index 1a9bd22..0000000
--- a/biomes/underworld.lua
+++ /dev/null
@@ -1,24 +0,0 @@
-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_cobble = minetest.get_content_id("default:cobble")
-local c_dirt = minetest.get_content_id("default:dirt")
-local c_sand = minetest.get_content_id("default:sand")
-local c_lava = minetest.get_content_id("default:lava_source")
-
-local c_dirt_moss = minetest.get_content_id("dfcaverns:dirt_with_cave_moss")
-local c_cobble_fungus = minetest.get_content_id("dfcaverns:cobble_with_floor_fungus")
-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
-
--------------------------------------------------------------------------------------------
-
-
-minetest.register_biome({
-	name = "dfcaverns_underworld",
-	y_min = dfcaverns.config.ymin,
-	y_max = dfcaverns.config.lava_sea_min,
-	heat_point = 50,
-	humidity_point = 50,	
-})
-
diff --git a/config.lua b/config.lua
index aa87d6e..e1d8116 100644
--- a/config.lua
+++ b/config.lua
@@ -67,6 +67,4 @@ setting("int", "ymax", -300, "Upper limit of level 1")
 setting("int", "level1_min", -900, "Upper limit of level 2")
 setting("int", "level2_min", -1500, "Upper limit of level 3")
 setting("int", "level3_min", -2100, "Upper limit of lava sea")
-setting("int", "lava_sea_min", -2700, "Upper limit of underworld")
-setting("int", "ymin", -3500, "Lower limit of underworld")
-
+setting("int", "lava_sea_min", -2700, "Lower limit of the lava sea")
diff --git a/init.lua b/init.lua
index 62ce485..ecc7cea 100644
--- a/init.lua
+++ b/init.lua
@@ -35,4 +35,3 @@ dofile(modpath.."/biomes/level1.lua")
 dofile(modpath.."/biomes/level2.lua")
 dofile(modpath.."/biomes/level3.lua")
 dofile(modpath.."/biomes/lava_sea.lua")
-dofile(modpath.."/biomes/underworld.lua")
diff --git a/settingtypes.txt b/settingtypes.txt
index fa113f6..7fc60af 100644
--- a/settingtypes.txt
+++ b/settingtypes.txt
@@ -34,5 +34,4 @@ dfcaverns_ymax (Upper limit of level 1) int -300
 dfcaverns_level1_min (Upper limit of level 2) int -900
 dfcaverns_level2_min (Upper limit of level 3) int -1500
 dfcaverns_level3_min (Upper limit of lava sea) int -2100
-dfcaverns_lava_sea_min (Upper limit of underworld) int -2700
-dfcaverns_ymin (Lower limit of underworld) int -3500
+dfcaverns_lava_sea_min (Lower limit of lava sea) int -2700
\ No newline at end of file