The Caves is the third area the player can fight Monsters. It requires 500 Energy 
and 900 Fight Points 
to fight in this area. The player is also suggested to have the Lantern equipped in this area, as it is very dark (with the exception of Goblin, as the Lantern is dropped by it).
It is possible to find these monsters in the area:
Regular Monsters
Rare monsters
Thief leader (quest only) 