Twin Seas

The Twin Seas extend from Kingsport in the West to the Marshlands of the East. It also extends North between the two main landmasses upto the mountains on the border of the Dry Steppes. In the south, the Amazonian isles are located in the Twin seas.

The Twin Seas are important for trade and commerce with Westmarch, Lut Gholein, Kurast and the Skovos Isles being the main centres of commerce.

Reference

Diablo II Manual