Boreum, Cyrenaica Boreum, Cyrenaica Boreum was a city and diocese in Roman Libya. It is now a Roman Catholic titular see. Its modern location is Tabibbi, in southern modern Libya. Boreum was important enough in the Roman province of Libya Superior (Libya Pentapolitana; part of Cyrenaica) to become one of the suffragan sees in this province, which depended directly on the Patriarchate of Alexandria (in Egypt) without a proper Metropolitan, but faded like most bishoprics in Roman Africa. We know of only one ancient bishop, the Arian bishop Senziano, mentioned in 325. In 1933 the diocese was nominally restored as a Latin
Cyrenaica salt-collecting and sponge fishing were more important than agriculture. Bomba and Tobruk have good harbors. South of the coastal highlands of Cyrenaica is a large east-west running depression, extending eastward from the Gulf of Sidra into Egypt. This region of the Sahara is known as the Libyan Desert, and includes the Great Sand Sea and the Calanshio Sand Sea. The Libyan Desert is home to a few oases, including Awjila (ancient Augila) and Jaghbub. The Berbers were the earliest recorded inhabitants of Cyrenaica, and most modern Cyrenaicans are considered to be Berber in origin. Remnants of the Berber languages spoken