Prabalgad fort, or Muranjan fort in its present form, was built during Bahmani Sultanate to keep an eye on Panvel Fort and Kalyan Fort in North Konkan. Around 1458 AD, Malik Ahmad, the prime minister of the kingdom of Ahmednagar, took over the fort during his conquest of Konkan. During the collapse of the Ahmadnagar Sultanate, Shahaji tried helping them unsuccessfully against the separate forces of the Mughal Empireand the Adil Shahi dynasty and moved to Muranjan, along with wife Jijabai and younger son Shivaji for a brief period.

The fort was conquered by Shivaji from the Mughals in 1657, after he establishing himself in the Kalyan-Bhivandi area.

There is a dense forest on the way till the top. Historical references indicate that Freedom fighter Umaji Naik made a stay here in 1826. The fort top commands an excellent view of the surroundings with Prabalgad in the front. Matheran, Chanderi, Irshal,Karnala, Manikgad, etc can be easily identified.

Also, Get ready with your cameras to shoot the actual stars. Nothing can beat the visibility of stars in dark skies.