The Great Bath is part of a large citadel complex that was found in the 1920s during excavations of Mohenjo-daro, one of the main centres of the Indus civilization. The bath is built of fine brickwork and It is 8 feet (2.5 metres) lower than the surrounding pavement.. There were steps leading down to the tank. There was also a provision for draining, cleaning and re-filling the tank from time to time.