I Wonder How Far It Ghost? is an achievement that requires the player to explore the tunnel from the cellar under the Hair of the Dog bar in Canifis.
The tunnel is located under a trapdoor at the back of the Hair of the Dog inn, not inside. If the tunnel shortcut is unlocked by levelling Zachory Bragg to 99 in the Temple Trekking minigame, players may have to toggle the trapdoor's function back to normal.
Players can also enter the tunnel from the opposite direction in the Mort Myre Swamp.
This achievement used to be a task prior to the release of the Achievements System on 18 April2017.