20Natural

Level 1 of the Dungeon
(19, 23, D:1)
  a +0 ring mail
(20, 28, D:1)
  a +0 whip
  a kobold corpse
(21, 30, D:1)
  a rat corpse
(23, 39, D:1)
  a +0 sling
(28, 18, D:1)
  a +0 plate armour
(28, 36, D:1)
  a ball python corpse (skeletalised by now)
(40, 35, D:1)
  a +0 chain mail