Where is the dragons chest in taverly dungeon

As far as I know there are no chest in Taverly Dungeon, however the following monsters can be found:

• Baby Blue Dragon
• Black demon
• Black dragon
• Black Knight
• Blue dragon
• Chaos druid
• Chaos Dwarf
• Giant bat
• Hellhound
• Hill giant
• Jailer
• Kharidian scorpion
• Lesser demon
• Magic axe
• Monk of Zamorak
• Poison spider
• Poison Scorpion
• Skeleton
• Suit of Armour