Night raid on Kulaca Hisar
· Kulaca Hisar site, near İnegöl, Bursa Province, Türkiye

Wikimedia Commons · CC BY-SA 3.0 · file In the early struggle with the İnegöl frontier lord, Osman is reported to have raided and burned the small fortress of Kulaca near İnegöl. Coordinate is a representative point near modern Kulaca; the precise medieval fortress site is uncertain.