|Location on World Map|
|Dense runestone mine||←||Soul altar||→||Lunar Isle|
According to the transvergence theory and soul journey, the soul altar located in the Arceuus House is not the real soul altar; this altar was created by the power from the Dark Altar located near it, where it drew energy from the plane where the real soul altar is located.
It is used to craft soul runes from dark essence fragments, providing 29.7 Runecrafting experience. In order to craft soul runes, players need 90 Runecrafting and 100% favour with the Arceuus House in Great Kourend.
The maximum limit for crafting soul runes in one visit is 212. This would be achieved by mining 27 dense essence blocks and then turned into dark essence blocks and crushed with a chisel into dark essence fragments. Then, another inventory of 26 dense essence blocks are mined and turned into dark essence fragments before going to the soul altar.
Note that you can only have a maximum of 108 dark essence fragments and therefore must be used before crushing the remaining dark essence blocks. One dark essence block is equivalent to four essence pieces.
The maximum possible experience is 6,148 obtained while doing the above.