There are a number of mountain passes within Balochistan. The Bolan Pass has been the main entrance to the provincial city of Quetta. There are several others including Lak Pass, Khojak Pass and Harnai Pass. The Balochistan coastline extends from the Sindh province to the Iranian border measuring a total distance of over 750 km. The city of Gwadar holds the largest port in the province which is based near the ancient area of Makran. Pasni is another medium-sized town known for fishing. Along the Makran Coastal Highway, there are several rock formations as well as Kund Malir and the Hingol National Park.