<P> The Great Bath is one of the best - known structures among the ruins of the ancient Indus Valley Civilization at Mohenjo - daro in Sindh, Pakistan . Archaeological evidence indicates that the Great Bath was built in the 3rd millennium BC, soon after the raising of the "citadel" mound on which it is located . </P> <P> The Great Bath of Mohenjodaro is called the "earliest public water tank of the ancient world". It measures 11.88 × 7.01 metres, and has a maximum depth of 2.43 metres . Two wide staircases, one from the north and one from the south, served as the entry to the structure . A 1 metre wide and 40 centimetres high mound is present at the ends of these stairs . A hole was also found at one end of the Bath which might have been used to drain the water into it . </P>

List the salient features of the great bath