Air altar

The Air altar may be found south of falador, north-west of the first T-junction you come across when walking south out of falador. It is used to craft Air runes from rune essence or pure essence, providing 5 Runecrafting experience.

Access
As with most other runecrafting altars, it can be accessed via the Abyss. Players could also enter its ruins by using an air talisman. Players could also simply click on the ruins while wearing an air tiara.

The fastest way to go there from a bank is to run south from falador

The skills necklace can be used to teleport to the cooking guild, then it's a short walk southeast to the altar.

The air altar may be found  It is used to craft Air runes from rune essence or pure essence, providing 5 runecrafting experience.