Katrina's Scroll

In the past few nights, shockwaves of magic suddenly appeared from the Barrow, followed by a burst of howling. I believe someone has constructed a magic circle in the area. Please investigate this for me.
Here, take [Katrina's Scroll] with you. If you see any strange patterns or markings, copy them and bring the sketches back to me.
:- [Katrina], Eye of Wisdom Researcher - Quest Introductory Text: The Magic of the Barrow
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== Source ==
=== NPC ===
* Katrina
== Quests ==
=== Objective of Quests ===
* The Magic of the Barrow