In a medieval chronicle "Ajayib-ad-Dunya", written in the 13th century by an unknown author, Arran is said to have been 30 parasangs (200 km) in width, and 40 farsakhs (270 km) in length.
Medieval Islamic geographers gave descriptions of Arran in general, and of its towns, which included Barda, Beylagan, and Ganja, along with others.