First complete the quest: Rune Mysteries. The quest start is on the second floor of Lumbridge. Speak to the Duke of Lumbridge to start the quest. The quest will involve going to the wizard’s tower and the magic shop in Varrock. After completing the quest, you will be given an air talisman and will be able to mine rune essence. To get to the rune essence mine (the place where you mine rune essence) you either go to the head wizard (At the wizard's tower) or to Audbury (the magic shop owner in Varrock) Right click on either of them and choose the option teleport. They will say some magic words and you will be teleported to a place where you will be able to mine rune essence.
Find a huge rock, which can be found by following the ladder on the floor. (See pictures below) Mine a full inventory of rune essence with a pickaxe. When you are done, find the portal, which will bring you back to where you teleported from. Now you either use your air talisman to make air runes or buy/find another type of talisman to make other runes. Right click on your talisman from your inventory and choose the “locate” option. There should be directions such as (south west, north east...) in the chat box. Then after moving in that direction for a while right click and choose the “locate” option again.
The directions might change. If it doesn’t change, keep going the same direction. If it does change, start going the new direction. It should eventually lead you to a rock with a little glow and some bluish dots on it. (See picture below) If you right click on it, one of the choices should be “examine mysterious ruins” Click your talisman, then directly click the mysterious ruins. You can also right click the talisman and choose the option use. Then directly left click the mysterious ruins. You will be taken into the temple immediately. Find a big rock in the center of the temple. (See picture below) It should say “Craft-at-altar” when you right click it. Use one of your rune essences you mined on the altar and all your rune essences will be bond into runes.
Below is a picture of the four talismans. (Air, mind, water, earth) I don't have the body talisman and the fire talisman.
People have been asking about the “Large Rock” where you mine rune essence from. Below is a picture of the “Large Rock”
Here is the Mysterious Ruins you use your talisman on to enter the temple. Below is the Air Temple’s entrance.
Then after using the talisman on the Mysterious Ruins, you will be teleported into the Altar. Below is the Air Altar and the “ Big Rock” where you use the “Craft-at-Altar” option to bind your rune essences into runes.
