Torna Fort, also known as Prachandagad, is a large fort located in Pune district, in the Indian state of Maharashtra. It is historically significant because it was the first fort captured by Shivaji Maharaj in 1643, at the age of 16, forming the nucleus of the Maratha empire. The hill has an elevation of 1,403 meters (4,603 ft) above sea level, making it the highest hill-fort in the district. The name derives from Prachanda (Marathi for huge or massive) and gad (Marathi for fort).