Swamp tar

Swamp tar can be found in Lumbridge Swamp. It's used in several quests.

Uses

Swamp Tar can be made into Guam tar by using it with an identified Guam leaf once a player has reached level 19 in the Herblore skill. Simply identify the herb and use it with the Swamp Tar while having a Pestle and mortar in your inventory; this grants 30 experience points. Swamp tar is also used to make Lamp Oil.