This book tells that at one point, Mayene held a great ter'angreal that was in the shape of a large, twisted, red doorway that could never be knocked over. If you entered it, so long as you carried no iron, musical instruments or sources of light then you would be taken to a strange people whose name has been lost in time. These people, who resembled humaniod snakes, would answer truthfully three questions. However, the asker should be cautious. They would not answer, and would indeed punish, any question they saw as frivolous or that touched upon the Shadow. Finally, any one person could only enter the Doorway once.
It fell into the hands of Tear and the Great Holding because at one point Tear threatened Mayene and the First, who had already used the Doorway, offered it as a peace incentive. The Tairens accepted, and placed it in the Great Holding.