You must have heard about the black hole of space, but do you know about the 'Black Hole of Calcutta'. Few people will be patted about it. But those who are interested in history, they will definitely know about this event. This is a shocking incident of Indian history, about which we are going to tell you today. A small room at 'Fort William' in Kolkata is buried with a creepy secret of history. Fort William is a fort built on the eastern bank of the Hooghly River in Kolkata, which was built during the British rule. It was built in the name of King William III of England. It has a large ground in front of it, which is part of the fort. It is the largest urban park in Kolkata. In front of this fort the historic Victoria Plain is also built.

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Fort William' is the headquarters of the Eastern Command of the Army. This fort was built by the British 'East India Company' to keep their factories safe because in the last decade of the 17th century Nawab of Bengal Siraj-Ud-Daulah built the British. A special room of 18 feet long and 14 feet wide was also built in this fort, which was built in about 10 years, named 'Black Hole'. Two very small skylights were also made in it and due to which it was named 'The Black Hole' was lying there, so the British had built this room to punish petty criminals, but what did they know that this room would later become their own grave.

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When 'Fort William' was fully formed, the British started increasing their military power here. When Nawab Siraj-ud-daulah came to know about this, he warned the British not to increase their military power, but they paid special attention to it. Angered by this, on 5 June 1756, Nawab Siraj-ud-daulah went out with a large army to attack 'Fort William'.

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