Koskun is a region in Ulgrotha. It is comprised of a set of mountains, a keep, a river, and waterfalls.
The Koskun Mountains are a mountain range on the plane of Ulgrotha. Near Kher Ridge is the home of the Anaba Minotaurs. This was where Taysir of Rabiah defeated Sandruu, and where Feroz killed Taysir.
The mighty Koskun River flows through the mountains and turns into the Koskun Falls before reaching the Dark Barony.
Koskun Keep is a stronghold of goblins and thieves. Ruled by Eron the Relentless, who had an agreement with Aysen to buy food from them in return for not attacking their towns. The goblin wizards from the Keep have begun egotistical duels against mages from the Wizards' School that may threaten to hinder relations between the two powers. At the base of the keep is the fortress of Strongrock.
At the base of Koskun Keep stands Strongrock, a small fortress.
An-Zerrin is a small castle hidden within the Koskun Mountains, though it is now no more than a tumble of stones and snow haunted rooms. Its occupants were killed by Baron Sengir and serve him in death.
- D.G. Chichester (February, 1996) "Homelands" (comic)
- Scott Hungerford and Kyle Namvar (June 14th, 1995), "Backstory for Magic the Gathering: Homelands"