Ancient Circle: East of Maragir

I've stumbled upon a ruined ancient circle. I wonder what secrets it may hold...

I have to use Astral Communion by the altar to awaken the magic resting in this ancient circle.

As soon as I cast the hex, the guardians of the circle came to test or punish me. Whatever their reasons, I must defeat them.

It's done. Now let's see what's inside the chest.

I've awoken the magic slumbering in the ancient circle and gained its power.