An Oak altar is a piece of furniture that can be built in the Chapel of a player-owned house with the Construction skill. It gives normal Prayer experience when a set of bones are offered at it. With one incense burner lit, it gives 150% Prayer experience. If two incense burners are lit it will give 200% Prayer experience.
Building an oak altar requires at least level 45 Construction and 4 oak planks, and gives the player 240 Construction experience.
