Tigray Region
Tigray is bordered by Eritrea to the north, Sudan to the west, the Afar Region to the east, and the Amhara Region to the south and southwest. Besides Mekelle, major cities include Adigrat, Aksum, Shire, Humera, Adwa, Alamata, Wukro, Maychew, Sheraro, Abiy Adi, Korem, Qwiha, Hawzen, Mekoni and Zalambessa. There is also the historically significant town of Yeha.
Tibesti Region
The Tibesti Region is located in the Sahara. It contains part of the Tibesti Mountains, and part of the Erg of Bilma, a vast area of sand dunes in the center of the desert. The region's northern border lies on the Aouzou Strip, a point of dispute between Chad and Libya. The region also shares a border with Niger. The capital, Bardaï, is located in the northern part of the region.