Manta

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 club
(8, 28, D:1)
  6 javelins
(17, 26, D:1)
  a cursed -1 dagger
(18, 30, D:1)
  a +0 club
(19, 14, D:1)
  a +0 short sword
(20, 38, D:1)
  a +0 scale mail
(22, 6, D:1)
  a +0 dagger
(24, 7, D:1)
  a +0 club
(29, 31, D:1)
  a +0 leather armour
(32, 37, D:1)
  2 stones
(34, 29, D:1)
  a +0 cloak
(34, 31, D:1)
  27 arrows
(46, 45, D:1)
  a +0 dagger
(49, 31, D:1)
  19 stones
(50, 54, D:1)
  a +0 club

Level 2 of the Dungeon
(6, -1, D:2)
  a +0 club
(8, 1, D:2)
  a +0 dagger
(11, 50, D:2)
  a +0 dagger
  a goblin corpse (skeletalised by now)
(15, 36, D:2)
  a quokka corpse (skeletalised by now)
(21, 23, D:2)
  a ball python corpse (skeletalised by now)
(26, 30, D:2)
  a rat corpse (skeletalised by now)
(27, 0, D:2)
  a +0 dagger
(27, 13, D:2)
  a +0 helmet
(30, 40, D:2)
  a +0 scale mail
(31, 35, D:2)
  a +0 dagger of pain
(32, 21, D:2)
  a goblin corpse (skeletalised by now)
(34, 7, D:2)
  a +0 hand axe
(34, 34, D:2)
  a potion of curing
(35, 36, D:2)
  a hobgoblin corpse (skeletalised by now)
(38, 34, D:2)
  a +0 club
  (unseen)

Level 3 of the Dungeon
(0, 0, D:3)
  a potion of degeneration
(3, 3, D:3)
  a +0 club
  a goblin corpse
(5, 17, D:3)
  22 sling bullets
(6, 14, D:3)
  an adder corpse
(8, 1, D:3)
  a scroll of remove curse
(9, 3, D:3)
  19 sling bullets
(9, 12, D:3)
  23 arrows
(11, 19, D:3)
  a rat corpse
(13, 31, D:3)
  a quokka corpse
(14, 4, D:3)
  a leopard gecko corpse
(17, 10, D:3)
  a +0 ring mail
(26, 10, D:3)
  a hobgoblin corpse
(29, 33, D:3)
  a frilled lizard corpse
(30, -7, D:3)
  27 arrows