- White Skeletons within the cave.
- A deep twisting cave with several bosses and the famous Skeleton weapons.
- The Skeleton Boss Rooms were originally supposed to be locked by keys, but Nexon never implemented it. For example - Skeleton Bandit Key.
- The 4 bosses dropped what became known as the Skeleton Weapons (Maxcaliber, Moonblade, Wicked staff, and Death's Head).