The Den of Evil is the only side area in the Blood Moor. It appears as a cave decorated on the outside by certain symbols - most notably, the Fallen banner indicating the nature of its inhabitants. Though the Den of Evil is a side area cave, it contains no golden chest in it. This is probably because players are most probably starting the game at Level 1 when they start this quest. Hence, giving them the opportunity to get magic items at such low levels would lead to game imbalance.