Suran is a stronhold in the Molag Amur Region. It lies way up in the mountains. The river that runs on the Eastern side of the city was a natural defence for the city. Dagoth Yur didnt see much danger in that city so he didnt bother to take it out, but he heard that they were planing to evacuate and he has halted the river. Without the river Suran has hardley any defence. Dagoth Yur has two ways to get to the city. First he can cross the river with the most defence but easy to get to the city, or he could go over the mountains which has average defence but will take awile to get to Suran.
This is one of the harder maps I have made. I had my brother test this map and kept making it harder and harder because he kept beating it very easy. But now he finished the map 3 years before the time runes out. I hope this is a challenge for you.