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Underi fort alibag
Underi (also called Jaidurg) is a fortified island near the mouth of Mumbai harbour south of Prong's Lighthouse. It is a companion fort to Khanderi and currently lies in Raigad district, Maharashtra. These islands of Khanderi and Underi served as one of the landmarks for ships entering Mumbai harbour. Underi is smaller than Khanderi.
The fortification was built by Kahim of the Siddis in 1680 CE.
Recommended to carry water.
Accommodation :Alibaug and Thal have resorts and restaurants.
By Air : Mumbai is a nearest airport.
By Rail :Pen is a nearest railway station.
By Road :
Thal town is located at about 8 km north of Alibaug, and the diversion to Thal is 4 km away from Alibaug on Alibaug Revas road. ST buses ply regularly between Alibaug and Thal. We can hire small boats from Thal beach, owned by local fishermen who take us to the fort. Khanderi is located bit far from the beach, and can be visited irrespective of high or low tide as it has a jetty. Since Underi has no jetty, one can visit it only during low tide.