To access the Entrana Dungeon you will need to take the boat to Entrana, which means bringing along no weapons or armour. The entrance is on the north side of the island, you must climb down the ladder where the red exclamation point is. There is a monk near the ladder who will warn you that the only exit to the dungeon leads to the wilderness, so it is wise to bring teleport runes with you, so you don't have to go unarmed and unarmoured into the wilderness. This dungeon is mainly used for the Lost City quest where you must obtain a branch off the Dramen Tree. The Entrana Dungeon can also be a good place to train Magic and Ranged, as the greater demons cannot reach you from the Dramen tree area while you range them. You are allowed to bring runes and fletching materials to the island. For Magic, cut a Dramen branch off the tree and make a Dramen staff to use. Wizard robes and amulet are allowed on the island for a little magic bonus, and ranged armour can be crafted on the island.