Anatoly Kirpichnikov asserts that the fortification was founded in the late 1330s. Archaeologists have found stone foundations of 19 buildings which varied in size between 4 by 5 metres (13 by 16 feet) and 8 by 7 metres (26 by 23 feet). There has also been one much larger building with a floor area of 300 square metres (3,200 square feet) and a hearth in the middle of the building.[1]