diff --git a/mapgen.lua b/mapgen_nobiomes.lua
similarity index 98%
rename from mapgen.lua
rename to mapgen_nobiomes.lua
index 6598074..6359804 100644
--- a/mapgen.lua
+++ b/mapgen_nobiomes.lua
@@ -19,6 +19,7 @@
 
 ]]--
 
+nether.DEPTH_FLOOR = -30912 -- this mapgen will create Nether all the way down
 
 -- Parameters