Golconda (Telugu: గోల్కొండ, romanized: Gōlkōnḍa) is a historic fortress and ruined city located in the western outskirts of Hyderabad, Telangana, India. It was originally called Mankal. The fort was originally built by Kakatiya ruler Pratāparudra in the 11th century out of mud walls. It was ceded to the Bahmani Kings by Deo Rai, Rajah of Warangal during the reign of Sultan Muhammad Shah (1358–1375 A.D.) of the Bahmani Sultanate. Following the death of Sultan Mahmood Shah, the Sultanate disintegrated and Sultan Quli, who had been appointed as the Governor of Hyderabad by the Bahmani Kings, fortified city and made it the capital of the Golconda Sultanate. Because of the vicinity of diamond mines, especially Kollur Mine, Golconda flourished as a trade centre of large diamonds known as Golconda Diamonds. Golconda fort is currently abandoned and in ruins. The complex was put by UNESCO on its "tentative list" to become a World Heritage Site in 2014, with others in the region, under the name Monuments and Forts of the Deccan Sultanate (despite there being a number of different sultanates). History The origins of the Golconda fort can be traced back to the 11th century. It was originally a small mud fort built by Pratāparudra of the Kakatiya Empire. The name Golconda is thought to originate from Telugu for "shepherd's hill" (గొల్ల కొండ, romanized: Gullakōnḍa). It is also thought that Kakatiya ruler Ganapatideva 1199–1262 built a stone hilltop outpost — later known as Golconda fort — to defend their western region. The fort was later developed into a fortified citadel in 1518 by Sultan Quli of the Qutb Shahi Empire and the city was declared the capital of the Golconda Sultanate. The Bahmani kings took possession of the fort after it was made over to them by means of a sanad by the Rajah of Warangal. Under the Bahmani Sultanate, Golconda slowly rose to prominence. Sultan Quli Qutb-ul-Mulk (r. 1487–1543), sent by the Bahmanids as a governor at Golconda, established the city as the seat of his governance around 1501. Bahmani rule gradually weakened during this period, and Sultan Quli (Quli Qutub Shah period) formally became independent in 1518, establishing the Qutb Shahi dynasty based in Golconda. Over a period of 62 years, the mud fort was expanded by the first three Qutb Shahi sultans into the present structure: a massive fortification of granite extending around in circumference. It remained the capital