Garaveh Natural Asphalt Mine The Garaveh Natural Asphalt Mine is located on the Gilan-e Gharb to Qasr-e Shirin road, between 20 to 30 kilometers from Qasr-e Shirin, and 2 kilometers north of the new Garaveh village. The thickness of the mineral material is about 15 meters in its northern part and reaches 3 meters in its southern part.