|Location on World Map|
|Shady grove||←||Cosmic Altar||→||Unknown|
As with most other runecrafting altars, it can be accessed via the Abyss. Players can also enter its ruins by using a cosmic talisman. Players can also simply click on the ruins while wearing a cosmic tiara.
There are two agility shortcuts that allow faster access, one requiring 46 agility for the medium shortcut, and 66 agility for the advanced shortcut. You will take four damage if you fail these shortcuts.
Crafting 1 cosmic rune grants 8 experience.
- An inventory of 28 rune/pure essence grants 224 EXP.
- An inventory of 30 (Small pouch) grants 240 EXP.
- An inventory of 35 (Small pouch + Medium pouch) grants 280 EXP,.
- An inventory of 43 (Small pouch + Medium pouch + Large pouch) grants 344 EXP.
- An inventory of 54 (Small pouch + Medium pouch + Large pouch + Giant pouch) grants 432 EXP.
A cosmic tiara may be created at this altar by having a cosmic talisman and a normal tiara in your inventory. The player must use the tiara on the altar. Doing so will earn 40 Runecrafting experience.
- The spheres that fly throughout the altar look like the Wind Blast spell.