diff --git a/dat/dungeon.def b/dat/dungeon.def
index d5d18ceaa..093dbbdae 100644
--- a/dat/dungeon.def
+++ b/dat/dungeon.def
@@ -27,7 +27,7 @@ CHAINBRANCH:	"Sokoban" "oracle" + (1, 0) up
 RNDLEVEL:	"bigrm" "B" @ (10, 3) 40 10
 CHAINBRANCH:	"The Quest" "oracle" + (6, 2) portal
 BRANCH:		"Fort Ludios" @ (18, 4) portal
-RNDLEVEL:	"medusa" "none" @ (-5, 4) 2
+RNDLEVEL:	"medusa" "none" @ (-5, 4) 4
 LEVALIGN:	chaotic
 LEVEL:		"castle" "none" @ (-1, 0)
 CHAINBRANCH:	"Gehennom" "castle" + (0, 0) no_down
diff --git a/dat/medusa.des b/dat/medusa.des
index 48720d3ba..0f8c9d26f 100644
--- a/dat/medusa.des
+++ b/dat/medusa.des
@@ -217,3 +217,202 @@ MONSTER:random,random
 MONSTER:random,random
 MONSTER:random,random
 MONSTER:random,random
+
+
+LEVEL:"medusa-3"
+FLAGS: noteleport,mazelevel
+INIT_MAP:solidfill,' '
+GEOMETRY:center,center
+#
+# Here you disturb ravens nesting in the trees.
+#
+MAP
+}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
+}}}}}}}}}}.}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}.}}}}}}}}}}}}}}}}}}}}}}}}}}}}
+}}}}}}}}T..T.}}}}}}}}}}}}}}}}}}}}..}}}}}}}}.}}}...}}}}}}}.}}}}}......}}}}}}}
+}}}}}}.......T.}}}}}}}}}}}..}}}}..T.}}}}}}...T...T..}}...T..}}..-----..}}}}}
+}}}...-----....}}}}}}}}}}.T..}}}}}...}}}}}.....T..}}}}}......T..|...|.T..}}}
+}}}.T.|...|...T.}}}}}}}.T......}}}}..T..}}.}}}.}}...}}}}}.T.....+...|...}}}}
+}}}}..|...|.}}.}}}}}.....}}}T.}}}}.....}}}}}}.T}}}}}}}}}}}}}..T.|...|.}}}}}}
+}}}}}.|...|.}}}}}}..T..}}}}}}}}}}}}}T.}}}}}}}}..}}}}}}}}}}}.....-----.}}}}}}
+}}}}}.--+--..}}}}}}...}}}}}}}}}}}}}}}}}}}T.}}}}}}}}}}}}}}}}.T.}........}}}}}
+}}}}}.......}}}}}}..}}}}}}}}}.}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}.}}}.}}.T.}}}}}}
+}}.T...T...}}}}T}}}}}}}}}}}....}}}}}}}}}}T}}}}}.T}}...}}}}}}}}}}}}}}...}}}}}
+}}}...T}}}}}}}..}}}}}}}}}}}.T...}}}}}}}}.T.}.T.....T....}}}}}}}}}}}}}.}}}}}}
+}}}}}}}}}}}}}}}....}}}}}}}...}}.}}}}}}}}}}............T..}}}}}.T.}}}}}}}}}}}
+}}}}}}}}}}}}}}}}..T..}}}}}}}}}}}}}}..}}}}}..------+--...T.}}}....}}}}}}}}}}}
+}}}}.}..}}}}}}}.T.....}}}}}}}}}}}..T.}}}}.T.|...|...|....}}}}}.}}}}}...}}}}}
+}}}.T.}...}..}}}}T.T.}}}}}}.}}}}}}}....}}...|...+...|.}}}}}}}}}}}}}..T...}}}
+}}}}..}}}.....}}...}}}}}}}...}}}}}}}}}}}}}T.|...|...|}}}}}}}}}}}....T..}}}}}
+}}}}}..}}}.T..}}}.}}}}}}}}.T..}}}}}}}}}}}}}}---S-----}}}}}}}}}}}}}....}}}}}}
+}}}}}}}}}}}..}}}}}}}}}}}}}}}.}}}}}}}}}}}}}}}}}T..T}}}}}}}}}}}}}}}}}}}}}}}}}}
+}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
+ENDMAP
+$place = { (08,06),(66,05),(46,15) }
+SHUFFLE: $place
+REGION:(00,00,74,19),lit,"ordinary"
+REGION:(49,14,51,16),random,"ordinary",unfilled
+REGION:(07,05,09,07),unlit,"ordinary"
+REGION:(65,04,67,06),unlit,"ordinary"
+REGION:(45,14,47,16),unlit,"ordinary"
+# Non diggable walls
+# 4th room has diggable walls as Medusa is never placed there
+NON_DIGGABLE:(06,04,10,08)
+NON_DIGGABLE:(64,03,68,07)
+NON_DIGGABLE:(44,13,48,17)
+# All places are accessible also with jumping, so don't bother
+# restricting the placement when teleporting from levels below this.
+TELEPORT_REGION:(33,02,38,07),(0,0,0,0),down
+STAIR:(32,01,39,07),(0,0,0,0),up
+STAIR:$place[0],down
+DOOR:locked,(08,08)
+DOOR:locked,(64,05)
+DOOR:random,(50,13)
+DOOR:locked,(48,15)
+# 
+FOUNTAIN:$place[1]
+#
+CONTAINER:('`',"statue"),$place[2],uncursed,montype:"knight",3,name:"Perseus" {
+  [75%]: OBJECT: ('[',"shield of reflection"),cursed,+0
+  [25%]: OBJECT: ('[',"levitation boots"),+0
+  [50%]: OBJECT: (')',"scimitar"),blessed,+2
+  [50%]: OBJECT: ('(',"sack")
+}
+#
+CONTAINER:('`',"statue"),random { }
+CONTAINER:('`',"statue"),random { }
+CONTAINER:('`',"statue"),random { }
+CONTAINER:('`',"statue"),random { }
+CONTAINER:('`',"statue"),random { }
+CONTAINER:('`',"statue"),random { }
+CONTAINER:('`',"statue"),random { }
+
+LOOP [8] {
+  OBJECT:random,random
+}
+OBJECT:('?',"blank paper"),(48,18)
+OBJECT:('?',"blank paper"),(48,18)
+#
+TRAP:"rust",random
+TRAP:"rust",random
+TRAP:"board",random
+TRAP:"board",random
+TRAP:random,random
+#
+MONSTER:('@',"Medusa"),$place[0]
+MONSTER:(';',"giant eel"),random
+MONSTER:(';',"giant eel"),random
+MONSTER:(';',"jellyfish"),random
+MONSTER:(';',"jellyfish"),random
+MONSTER:('n',"wood nymph"),random
+MONSTER:('n',"wood nymph"),random
+MONSTER:('n',"water nymph"),random
+MONSTER:('n',"water nymph"),random
+
+LOOP [30] {
+  MONSTER:('B',"raven"),random,hostile
+}
+
+
+LEVEL:"medusa-4"
+FLAGS: noteleport,mazelevel
+INIT_MAP:solidfill,' '
+GEOMETRY:center,center
+#
+# Here the Medusa rules some slithery monsters from her 'palace', with
+# a yellow dragon nesting in the backyard.
+#
+MAP
+}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
+}}}}}}}}}}}}}}........}}}}}}}}}}}}}}}}}}}}}}}..}}}.....}}}}}}}}}}}----|}}}}}
+}}}}}}..----------F-.....}}}}}}}}}}}}}}}}..---...}}}}....T.}}}}}}}....|}}}}}
+}}}.....|...F......S}}}}....}}}}}}}...}}.....|}}.}}}}}}}......}}}}|......}}}
+}}}.....+...|..{...|}}}}}}}}}}}}.....}}}}|...|}}}}}}}}}}}.}}}}}}}}----.}}}}}
+}}......|...|......|}}}}}}}}}......}}}}}}|.......}}}}}}}}}}}}}..}}}}}...}}}}
+}}|-+--F|-+--....|F|-|}}}}}....}}}....}}}-----}}.....}}}}}}}......}}}}.}}}}}
+}}|...}}|...|....|}}}|}}}}}}}..}}}}}}}}}}}}}}}}}}}}....}}}}}}}}....T.}}}}}}}
+}}|...}}F...+....F}}}}}}}..}}}}}}}}}}}}}}...}}}}}}}}}}}}}}}}}}}}}}....}}..}}
+}}|...}}|...|....|}}}|}....}}}}}}....}}}...}}}}}...}}}}}}}}}}}}}}}}}.....}}}
+}}--+--F|-+--....-F|-|....}}}}}}}}}}.T...}}}}....---}}}}}}}}}}}}}}}}}}}}}}}}
+}}......|...|......|}}}}}.}}}}}}}}}....}}}}}}}.....|}}}}}}}}}.}}}}}}}}}}}}}}
+}}}}....+...|..{...|.}}}}}}}}}}}}}}}}}}}}}}}}}}.|..|}}}}}}}......}}}}...}}}}
+}}}}}}..|...F......|...}}}}}}}}}}..---}}}}}}}}}}--.-}}}}}....}}}}}}....}}}}}
+}}}}}}}}-----S----F|....}}}}}}}}}|...|}}}}}}}}}}}}...}}}}}}...}}}}}}..}}}}}}
+}}}}}}}}}..............T...}}}}}.|.......}}}}}}}}}}}}}}..}...}.}}}}....}}}}}
+}}}}}}}}}}....}}}}...}...}}}}}.......|.}}}}}}}}}}}}}}.......}}}}}}}}}...}}}}
+}}}}}}}}}}..}}}}}}}}}}.}}}}}}}}}}-..--.}}}}}}}}..}}}}}}..T...}}}..}}}}}}}}}}
+}}}}}}}}}...}}}}}}}}}}}}}}}}}}}}}}}...}}}}}}}....}}}}}}}.}}}..}}}...}}}}}}}}
+}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}.}}}}}}....}}}}}}}}}}}}}}}}}}}...}}}}}}
+}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
+ENDMAP
+#
+$place = { (04,08),(10,04),(10,08),(10,12) }
+SHUFFLE: $place
+#
+REGION:(00,00,74,19),lit,"ordinary"
+REGION:(13,03,18,13),lit,"ordinary",unfilled
+#
+TELEPORT_REGION:(64,01,74,17),(0,0,0,0),down
+TELEPORT_REGION:(02,02,18,13),(0,0,0,0),up
+#
+STAIR:(67,01,74,20),(0,0,0,0),up
+STAIR:$place[0],down
+#
+DOOR:locked,(04,06)
+DOOR:locked,(04,10)
+DOOR:locked,(08,04)
+DOOR:locked,(08,12)
+DOOR:locked,(10,06)
+DOOR:locked,(10,10)
+DOOR:locked,(12,08)
+#
+BRANCH:levregion(27,00,79,20),(0,0,0,0)
+#
+NON_DIGGABLE:(01,01,22,14)
+#
+OBJECT:('(',"crystal ball"),(07,08)
+#
+CONTAINER:('`',"statue"),$place[1],uncursed,montype:"knight",3,name:"Perseus" {
+  [75%]: OBJECT: ('[',"shield of reflection"),cursed,+0
+  [25%]: OBJECT: ('[',"levitation boots"),+0
+  [50%]: OBJECT: (')',"scimitar"),blessed,+2
+  [50%]: OBJECT: ('(',"sack")
+}
+#
+CONTAINER:('`',"statue"),random { }
+CONTAINER:('`',"statue"),random { }
+CONTAINER:('`',"statue"),random { }
+CONTAINER:('`',"statue"),random { }
+CONTAINER:('`',"statue"),random { }
+CONTAINER:('`',"statue"),random { }
+CONTAINER:('`',"statue"),random { }
+LOOP [8] {
+  OBJECT:random,random
+}
+#
+LOOP [7] {
+  TRAP:random,random
+}
+#
+MONSTER:('@',"Medusa"),$place[0]
+MONSTER:(';',"kraken"),(07,07)
+#
+# the nesting dragon
+MONSTER:('D',"yellow dragon"), (05,04), asleep
+[50%]: MONSTER: ('D',"baby yellow dragon"), (04,04), asleep
+[25%]: MONSTER: ('D',"baby yellow dragon"), (04,05), asleep
+OBJECT:('%',"egg"), (05,04), montype:"yellow dragon"
+[50%]: OBJECT: ('%',"egg"), (05,04), montype:"yellow dragon"
+[25%]: OBJECT: ('%',"egg"), (05,04), montype:"yellow dragon"
+#
+MONSTER:(';',"giant eel"),random
+MONSTER:(';',"giant eel"),random
+MONSTER:(';',"jellyfish"),random
+MONSTER:(';',"jellyfish"),random
+LOOP [14] {
+  MONSTER:'S',random
+}
+LOOP [4] {
+  MONSTER:('N',"black naga hatchling"), random
+  MONSTER:('N',"black naga"), random
+}