X:208, Y852. Contains an Ancient Artefact.
X:227, Y:662. Contains a chest with some random loot.
X:321, Y:646. Another Ancient Artefact.
X:378, Y:694. The Emergency Entrance to the Acadamy that lets you skip most of the Nameless Isle.
X:394, Y:377. Inside the Orc Temple is another Ancient Artefact buried.