Tangeh Bolāghi, also transliterated as Tange-ye Bolāghi (Persian: تنگه بلاغی), or Bolāghi Gorge, is an archaeologically significant valley consisting of 130 ancient settlements, dating back to the period between 5000 BCE and the Sassanian dynastic era (224-651 CE). It is situated in Iran’s southern province of Fars, some 7 kilometres from Pasargadae, Iran. This is the valley of the Polvar River, a tributary to Kor River.