Sarlona

Sarlona is a continent in Eberron's northern hemisphere on the opposite of the globe from Karrnath. It is the continent from which both humans and kalashtar originated. The majority of the continent is ruled by the Unity of Riedra.  

Geography

Sarlona lies opposite Khorvaire and north of Argonnessen. It stretches from southern tropics to northern tundras and includes a number of inland lakes that are large enough to support navies and maritime trade. It has seas on all fronts, the Sea of Rage to the West, the White Sea to the North and the Barren Sea to the South-East. Sarlona is larger than Khorvaire, its Northern apex in the Tashana Tundra measured down to its Southern antapex in Adar is roughly over 3300 miles.
  Most forms of geography can be found in Sarlona from the Tashana Tundra to the plains of Syrkarn to the mountains of Adar and to the desert of Riedra. The weather in Sarlona is more unpredictable and harsher than that of Khorvaire. Sarlona has frequent and unexplainable planar effects unlike any other continent in Eberron. It is frequently the host to extraplanar breaches, manifest zones and reality storms that effect the landscape and physics of the land.