diff --git a/hooks.asm b/hooks.asm
index 0f5af4e..d33ff4a 100755
--- a/hooks.asm
+++ b/hooks.asm
@@ -2182,6 +2182,9 @@ JSL LampCheck
 ;--------------------------------------------------------------------------------
 org $81F503 ; <- F503 - Bank01.asm:14994 (LDA.b #$01 : STA $1D)
 JSL SetOverlayIfLamp
+;--------------------------------------------------------------------------------
+org $81B610 ; <- loading whether room is dark
+JSL DarkRoomCheck
 ;================================================================================
 
 ;================================================================================
@@ -2736,4 +2739,4 @@ NOP #2 ; this fixes Link's direction after mirroring and falling after entering
 ; Enable new room header table
 ;--------------------------------------------------------------------------------
 org $81B5E6
-LDA.b #$30
\ No newline at end of file
+LDA.b #$30
diff --git a/lampmantlecone.asm b/lampmantlecone.asm
index b0f00e8..7d1de70 100644
--- a/lampmantlecone.asm
+++ b/lampmantlecone.asm
@@ -6,12 +6,30 @@
 LampCheck:
 	LDA.l LightConeModifier : BNE .lamp
 	LDA.l LampEquipment : BNE .lamp ; skip if we already have lantern
+	LDA.l LampCone : AND.b #$10 : BNE .lamp
 	LDA.w DungeonID : CMP.b #$04 : BCS +  ; are we en HC?
-		LDA.l LampConeSewers : RTL
+		LDA.l LampCone : AND.b #$01 : RTL
 	+ : TDC
 	.lamp
 RTL
 ;================================================================================
+; Dark Room checks
+;--------------------------------------------------------------------------------
+; Output: 0 for normal room, 1 for darkness
+;--------------------------------------------------------------------------------
+DarkRoomCheck:
+	LDA.l LampCone : AND.b #$20 : BNE .no_dark
+	LDA.b [$0D], Y
+	AND.b #$01
+RTL
+.no_dark
+	LDA.b $A0 : ORA.b $A1 : BNE .not_dark
+	LDA.b #$01 ; ganon's room
+RTL
+.not_dark
+	LDA.b #$00 ; not ganon's room, so no darkness
+RTL
+;================================================================================
 ;--------------------------------------------------------------------------------
 ; Output: 0 locked, 1 open
 ;--------------------------------------------------------------------------------
diff --git a/tables.asm b/tables.asm
index d381a17..c3feb2d 100644
--- a/tables.asm
+++ b/tables.asm
@@ -110,8 +110,8 @@ RupoorDeduction:
 dw $000A ; #$0A - Default (10 decimal)
 ;--------------------------------------------------------------------------------
 org $B08038 ; PC 0x180038
-LampConeSewers:
-db $01 ; #$00 = Off - #$01 = On (default)
+LampCone:
+db $01 ; #$00 = Off - #$01 = On in Sewers (default) - #$10 = On Always - #$20 = No Dark Rooms
 ;--------------------------------------------------------------------------------
 org $B08039 ; PC 0x180039
 ItemCounterHUD: