 The Yalain appear to have been one of the three dominant polities in Postclassic central Petén, alongside the Itza and the Kowoj.The Yalain territory had its maximum extension from the east shore of Lake Petén Itzá eastwards to Tipuj in Belize.In the 17th century the Yalain capital was located at the site of that name on the north shore of Lake Macanché.