Sharksbane Wall

The Sharksbane Wall is a 135-mile-long barrier protecting Serôs. Construction on it began in -9845 DR to connect the garrison towers among the Sharksteeth Mountains. It was completed in -8938 DR. The wall stretches between the Akanapeaks of northernmost Chessenta and southwestern most Altumbel, southwest of Delthuntle. The effort was started by the clergy of Deep Sashelas, Trishina, and Eadro.

The wall effectively imprisoned the sahuagin in the southeastern arm of the Inner Sea. Strong armies can overwhelm defending forces and storm over the wall, but no raiders can slip through casually or unnoticed. Over the nine millenia since it was built, sea devils west of the Wall were ruthlessly hunted down and exterminated.