sentences:  It lies between the Radhanagiri and Koyna Wildlife Sanctuaries and forms the southern part of the Sahyadri Tiger Reserve.The park includes historical places of note including 17th century forts of the Maratha Empire, Prachitgad and Bhairavgad.Most of the protected area was used an open jail for the "prisoners of war" of the early battles during Shivaji's rule.