This is based off of the map at the front of the book, "Toll The Hounds" (the original artist isn't listed on the page so I do not know who to credit) - with my own mapping "style" applied to it.
For those not familiar with the series, the city and some of the outlying countryside is engulfed in darkness (part of the magical warren - Kurald Galain) - thus the cloud-like area over the city itself. The great barrow is a tomb/shrine of a special soldier, it was originally made from various armor/weapons, coins, etc. but since has continued to grow as more and more items are piled onto it.
Feel free to comment.