Marbury logs can be obtained by cutting Marbury trees, which requires a Woodcutting level of 100, or by receiving them as a drop from the creatures in the Celestial Dungeon. The trees can only be found in the Celestial Dungeon. Cutting the tree gives the player 500 woodcutting experience. The logs cannot be crafted into anything using the Fletching skill. Intead they serve only two purposes, which include burning the logs to gain 650 Firemaking skill, or they can be used as payment for repairing Celestial tools, or they can be used to allow access into the boss rooms in the Celestial Dungeon.