The Chronicle of the Priest of Duklja (14th or 16th century) described the geography under the rule of the South Slavic rulers, Hum had two major cities: Bona and Hum. The main settlements in Zachlumia were Ston, Ošlje, Dobar, the towns of Mokriskik and Glumainik. The Principality sprang from Dalmatia (Croatia) to the northwest and Pagania to the west; to the mountain of Kalinovik and the Field of Gatak, where it bordered Travunia. The most eastern border of Zahumlje went along the line Popovo-Ljubinje-Dabar and met with the Travunian border at the city of Ragusa, which had to pay the annual tax mogorish of 36 pieces of gold to the Zachlumian rulers and at times accept their rule. Zachlumia was split on 9 zhupanates: Ston, Popovo, Dubrava, Luka, Dabar, Žapska, Gorička and Večenik around Neretva. Zahumlje had access to the Adriatic Sea with the Pelješac peninsula and faced Serbia northwards.