The Wall of Power was a vast green force field that served as the northern boundary of known contiguous land. Who or what controls it is unknown, though in the year 311 AF it moved further north by means unspecified to reveal areas such as Aran'riod, Kamleikan, and features of the Ishana Peninsula. It retreated once more in the year 409 AF, which led to the discovery of the ruins of Morindar, and yet again in 413 AF to reveal the city of Isaia. In 552 AF, it dissolved completely, exposing the continent of Sapience in its entirety for the first time in the Modern Age.