The Kura–Araxes culture, also named Kur–Araz culture, Mtkvar-Araxes culture or the Early Transcaucasian culture was a civilization that existed from about 4000 BC until about 2000 BC, which has traditionally been regarded as the date of its end; in some locations it may have disappeared as early as 2600 or 2700 BC. The earliest evidence for this culture is found on the Ararat plain; it spread north in the Caucasus by 3000 BC. Altogether, the early Transcaucasian culture enveloped a vast area approximately 1,000 km by 500 km, and mostly encompassed the modern-day territories of the South Caucasus (except western Georgia), northwestern Iran, the northeastern Caucasus, eastern Turkey, and as far as Syria. The name of the culture is derived from the Kura and Araxes river valleys. Kura–Araxes culture is sometimes known as Shengavitian, Karaz (Erzurum), Pulur, and Yanik Tepe (Iranian Azerbaijan, near Lake Urmia) cultures. It gave rise to the Khirbet Kerak-ware culture found in the Levant and Trialeti-Vanadzor culture of the South Caucasus and Armenian Highlands. Early history The formative processes of the Kura-Araxes cultural complex, and the date and circumstances of its rise, have been long debated. Shulaveri-Shomu culture preceded the Kura–Araxes culture in the area. There were many differences between these two cultures, so the connection was not clear. Later, it was suggested that the Sioni culture of eastern Georgia possibly represented a transition from the Shulaveri to the Kura-Arax cultural complex. At many sites, the Sioni culture layers can be seen as intermediary between Shulaver-Shomu-Tepe layers and the Kura-Araxes layers. This kind of stratigraphy warrants a chronological place of the Sioni culture at around 4000 BCE. Some scholars consider the Kartli and Kakheti areas as key to forming the earliest phase of the Kura–Araxes culture. To a large extent, this appears as an indigenous culture of Caucasus that was formed over a long period, and at the same time incorporating foreign influences. There are some indications (such as at Arslantepe) of the overlapping in time of the Kura-Araxes and Uruk cultures; such contacts may go back even to the Middle Uruk period. Some scholars have suggested that the earliest manifestation of the Kura-Araxes phenomenon should be dated at least to the last quarter of the 5th millennium BC. This is based on the recent data from Ovçular Tepesi, a Late Chalcolithic settlement located in Nakhchivan by the Arpaçay river. Expansion Rather quickly, elements of Kura–Araxes