Little is known of the region's prehistory, including the origins of Caucasian Albania as a geographical and/or ethnolinguistic concept. In the 1st century BC and the 1st century AD, the area south of the Greater Caucasus and north of the Lesser Caucasus was divided between Caucasian Albania in the east, Caucasian Iberia in the center, Kolchis in the west, Armenia in the southwest and Atropatene to the southeast.