The Black Citadel

You evoke your Spell of Levitation. You whole body feels light and your boots leave the ground. You fly straight up for a better view of the forest. You notice the river winds its way through the dense black forest. The path in front of you continues to a fork and these two branches both lead to clearings in the forest. The right clearing looks larger than the left. In the distance you see a large black tower surrounded by low cloud. You now fly across the river and touch the other side gently.