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For the variant encountered in Daemonheim, see Bat bones (Dungeoneering).

Bat bones detail.png

Bat bones are a type of bone which are dropped by bats and giant bats. When buried they give 5.3 Prayer experience, 17% more than normal bones, which give 4.5 experience. Using bat bones on a prayer altar in a dungeon in Daemonheim gives 21.5 prayer experience, four times the amount of prayer experience obtained through burying. Bat bones became available to F2P after the Dungeoneering skill was released.

Members will need bat bones for some quests, including Merlin's Crystal, Forgettable Tale of a Drunken Dwarf and Watchtower.

Drop sources

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For an exhaustive list of all known sources for this item, see here.
Source Combat level Quantity Rarity
Albino bat431Always
Bat (Dungeoneering)2; 19; 36; 531Always
Giant bat23; 441Always
Giant bat (Dungeoneering)70; 86; 103; 120; 1381Always
Warped bat161Always
Chaos Elemental3055Common

Cost and XP Analysis

Bury Gilded altar or
Chaos Temple
Ectofuntus Cremation
Experience 5.3 18.55 21.2 23.85 (Total) 13.25 (Prayer) + 10.6 (FM)
Cost per XP -190.9 -54.6 -47.7 -42.4 (Total) -76.4 (Prayer) or -95.5 (FM)
  • It is assumed that two burners are lit while using the gilded altar and does not include the cost of clean marrentill.


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