Lava dragon bones

Lava dragon bones are associated with the Prayer skill, by burying the bones the player receives 190 prayer xp, 760 Prayer experience when offered at the Ectofuntus, or 665 Prayer experience when offered at Gilded altar with 2 burners lit. The bones can only be obtained from a Lava dragon which can easily be killed if the player has strong gear and a Dwarf cannon.