Naldurg Naldurg ( मराठी : नळदुर्ग ) is a city and a municipal council in Osmanabad district in the Indian state of Maharashtra . Population . India census , Naldurg had a population of 15 , 993 . Males constitute 52 % of the population and females 48 % . Naldurg has an average literacy rate of 64 % , higher than the national average of 59 . 5 % : male literacy is 71 % , and female literacy is 57 % . In Naldurg , 16 % of the population is under 6 years of age . Geography . Naldurg is located at . It has an average elevation of 566 metres ( 1856 feet ) . The town has one main airport , one railway station and ST buses . History . The Naldurg fort is one of the important ground forts in the Marathawada region . It represents a fine example of the medieval architectural style . Naldurg was formerly a district headquarters is situated about south - east of Osmanabad . The fort is an interesting place which encloses a knoll of basalt rock which juts out into the valley of the small Bori River . Along the rest of the cliff on three sides ran fortifications . A bastion is firmly built out of basalt and is large enough to carry heavy guns . The entire circumference is about a mile and a half . The interior portion is covered with ruined walls and a wide road running up to the centre . The fort has many bastions amongst which are upli Buruj , which is the height point in the Fort Paranda Buruj , nagar Buruj , Sangam Burug , Sangram Buruj , Bands Buruj , poone Buruj , etc . Inside the fort there are remains of the walls and some of the building such as Barood kotha , Baradari , Ambarkhana , and Rangaan mahal , Jali . Though the buildings are in ruins the remains give the impression that there might have been at one time other buildings . There are two tanks in the fort known as machali guns amongst which the most important are the “ hathi toph ” and magar Toph ” , The hathi Darwaza . The hurmukh and the hurmukh darwaza are the main gates of the fort . An interesting building which connects the fort and the Ranmandala is the dam constructed across the Bori River . The dam and the ” pani mahal " built underneath and in the middle of the dam were built during the reign of Ibrahim Adil shah II In 1613 . It is believed that the fort was built by Nalaraja ( The King Nala ) . The fort and the city is named after him . The fort was built in the period of the Chalukya kings of Kalyani . Later , from 1351 to 1480 , in the period of the [ Bahamani ] kings . In 1558 , the Adil Shahi rulers , after the downfall of Adil Shahi Kingdom , Naldurg passed into the hands of Moghalain the year 1686 . A . D . Nizamul Mulk Asif Jah was appointed as Governor of the entire Deccan from Central India and Gujrat up to Kanya Kumari . After the death of Aurangzeb Nawab Nizamul Mulk Asif Jah Bahadur founded the Nizam Domanion . During the time of II Nizam The Governor ( Subedar ) became a rebel and Causing Havoc to the Subject Then the Asif Jah II , Nawab Nizam Ali khan send his Afghan General Mohammed Dulah Khan . General Mohammed Dulah Khan conquered the province crushed the mutiny and took the traitor into his custody . Nizam the II Appointed Nawab Mohammed Dulah khan Bahabdur as a Governor ( Subedar ) with the title of Nawab Karar Nawaz Jung Bahadur . Then his son Nawab Amir Nawazul Mulk Bahabdur became the Governor of Naladrug . He ruled very successfully . He was not only kindhearted but generous when there was a theft of 1 1 / 2 Quintal gold from the Tulja Bhawani Temple . He donated the gold from his personal treasure to compensate . The most important historical marriage which took place at Naldrug Fort at Rang Mahal was the marriage of Chand Bibi Sultana . This wedding took place between the two kingdoms : Adil Shahi and Nizam Shahi The Makhbara ( Shrines ) of Nawab Amir Nawazul Mulk Bahadur and beside him Princess Fakharunnisa Begam , daughter of Nizam ul Mulk II Mazars are at Naldrug . Not only the people of Naldrug but the entire Marathawada people visit the shrine to pay respect to their late ruler . After the death of Nawab Sahab his successors became the Governors until 1948 . The present successor , seventh in line , is Nawab Mohammed Iqbal Ali Khan Bahadur ( Nawab of Balaghat , Asaf Jahi ) . Still the property of Nawab Sahab is there , and he and his sons frequently make the tour to Naldurg as they have sentimental affection for the soil and people . These cannons have figures of elephants and crocodiles and are therefore called Hathi Toph ( मराठी : हत्ती तोफ ) and Magar Toph ( मराठी : मगर तोफ ) . There are some old buildings still standing in good condition . Agriculture . Main crops are jowar , bajra , and tur . Weather . Rainfall . 760 mm ( average ) Languages / dialects . Marathi / Urdu / Hindi / Kannada Folk arts . Bhajan , Kirtan , Jogwa , Gondhal Cultural highlights . Tulja Bhavani , revered deity of Maharashtra , at whose feet Chhatrapati Shivaji Maharaj received inspiration to establish Hindvi Swaraj , is at Tuljapur and is in this district in which Shree Sant Goroba was born . Naldurg fort is an architectural marvel and its palace below the water attracts tourists and researchers alike , even after five centuries . The Osmanabad goat is a tough breed , always in demand by farmers across the country . Umarga and Sastoor were uprooted in the massive earthquake of 1993 . They have risen again from the ruins , just like the Phoenix , highlighting the courage of the people of the district .