The Treasure chest is a reward given to players for completing Carnillean Rising. This chest allows players to bury an item somewhere and let another player find it for a reward chosen by the original player who buried it.

Only a single item can be added to the chest, though bank notes and stackable items can be added as well.

There are three settings that can be set to determine who can access the chest. Setting a PIN number allows anyone to dig up the chest, but they must guess at the PIN. If the 'Key' option is selected, players must be given a key by the chest owner, before the chest can be dug up. Players using the 14 day trial membership upon account creation may not use the treasure chest even if the quest is completed but they are able to dig up another player's chest.

The chest can only be used on Gielinor's surface, free from quest and minigame areas. That includes Entrana, so you cannot smuggle items there, and it cannot be used in the caves beneath.

If the chest is destroyed the item inside will not be effected and still inside if the chest is recovered from the chest in the Carnillean mansion.