At the edge of the Vale of Mists, a strange caravan made its way along the ancient roadway that, if followed to its end, would lead all the way through the High Pass before ending in High Fen City. Before anyone could enter the Vale of Mists and continue on further, they would be confronted by the Vale's first line of defense, one of the largest walls ever built in Eldritch lands.
The Vale of Mists lay nestled in a steep-sided valley along the River Luath and when Nyrielle had retaken the Vale from Lothian hands, she looked for the most defensible position to establish the new border separating the Vale from Lothian lands. In the end, she chose a point in the mouth of the valley between two steep cliffs more than ten leagues apart and built a series of towering walls between the cliffs on either side.