Wall of Omnipotence

The Wall of Omnipotence is a wall which goes beyond the eye sight of any being. It is by far the biggest wall many have lay witness to. No matter how high one may go, they would never see the end of it. It goes on seemingly forever, far above the clouds. Only the wind itself could possibly see the top.

Behind the scenes
Assuming this is a reference to the wall of pillars that surrounds the City of the Winged Ones, in KQ6 the wall is only about twice as tall as the winged ones and the gate to the city. If this is a reference to wall of the Sacred Mountain, Alexander saw the top of it, when he was carried up to the Oracle.