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1 - Treasure Chest You can find other treasure chests (all with minor treasures) under the trees.
2 - Black Diamond You'll need a black diamond for the Ancient Gods quest.
3 - Sword It isn't possible to get to the sword. Supposedly, the sword isn't that special anyway.
4 - Ore Golems
5 - Maze Destination Inside you'll find a sarcophagus with a collection of magic things inside.