Olgan Hills
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Hilly region north of the Olgara River in eastern Corwyn. At the far northern edge of the hills, near the coast of Sea of Adar are the small Hlethvar Valley and the city of Sarkosa. In the southern region of the Olgan Hills is the fortress of Darkstone Keep. The Pentamundë Road crosses these hills on its route between Sarkosa and the junction with the Kurand Road.