Bjelaj () is a village in the municipality of Bosanski Petrovac, Federation of Bosnia and Herzegovina, Bosnia and Herzegovina. In the population census of 1991 there lived 569 inhabitants. The Village is dominated by the ruined fortress of Stari Grad Bjelaj. Geography Located close to the Čava Mountains (part of the Osječenica) rises from Bjelajsko polje. It is 3 km from the Bosanski Petrovac - Bihać road. There are two springs in Bjelaj, Sinanovac and Madžarac. The collection zone of these springs is Srt (1042 m.), The branch of Osječenica and the ravine Prhovo, on the periphery of Bjelajsko polje, below Osječenica. The springs have their islands that are lost in the fields of the fields (Keljavac). They are used for the water supply system and the surrounding villages. For inhabitants of the Petrovac area the name Bjelaj refers to all settlements on the southern side of the Bjelajski polje: (Busije Cimeše, Bjelajski Vaganac) History Medieval The old town of Bjelaj is located on the top of a hill, on a plateau extending in the main north-south direction, about 850 m long. The plateau is divided into the northern, wider and southern, narrow halves equally long. At the southern end of the northern half of the plateau, there is Velika Gradina, an insufficiently explored prehistoric locality from the bronze and iron age from the time of the Illyrians. The southern part of the plateau, much narrower than the north, is in the shape of a lingula. At its northern end is the unexplored prehistoric site of Mala gradina. To the south of it is a large fortress from the medieval period and the Ottoman, Stari grad Bjelaj. Historical unit - Stari grad Bjelaj, declared the National Monument of Bosnia and Herzegovina. Ottoman period The mighty and respectable Beavers' Krajina family in the first half of the rule of Osmanli, Ibrahimpašići, are named after Ibrahim-pasha, Deli-Murat's son. By the middle of the 20th century, there were turbines Deli-Murata in Bjelaj, located about 50 m from Ibrahimpašić's tower. Deli-Murat's son, Ibrahim, who was born at the time his father died and who was educated by Porta, built Ripač, erected a mosque called Ibrahim-pašina mosque, and got possession in Lika (around Lapac), then in Bihać, Ripč, Bjelaj and around today's Bosanski Petrovac. Later, Bećir-beg from Bjelajac (1760-1909) appeared in the vicinity of the Bećir-beg family. At the beginning of the 20th century, this