Torna Fort also known as Prachandagad is a large fort located in Pune district in the state of Maharashtra, India. It is historically significant because it is 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 metres (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).