In this guide, you will find how to get all the runes for the Nornir Chest on Dragonbeach in God of War Ragnarok.
You will find the first Rune right beyond the chest. You have to freeze the water and throw your axe through without freezing it.
After that, head to the dragon statue and you will find the rune just behind the statue. You need to smash it using your axe.
Now you have to look towards the water and there will be a geyser over here. Get your axe out and throw at it and you will find the rune on the other side.