|Location on World Map|
|Port Phasmatys||←||Dragontooth Island||→||Unknown|
Dragontooth Island is an island located in the north-east of Gielinor. The Ghost captain near the small boat in Port Phasmatys will take the player there and back for 25 ectotokens, or 10 with the Ring of charos (a) after completing the Ghost Ahoy quest. It plays a key role in the Ghosts Ahoy quest, being the island where the "book" is found. There is little else to do there beyond cutting Evergreen trees using the Woodcutting skill, or recovering buckets of sap.
As of the Elite Clue Scroll update on the 12th of June 2014, Dragontooth Island features a coordinate clue location as well.