"The most remarkable structure, alongside the town’s eastern side, is a 217-m-long, 36-m-wide basin. (Its proportions, incidentally, are almost exactly in the ratio of 6:1.) If we consider that its 1.5 to 1.8 m-thick walls were made of millions of carefully adjusted baked bricks, we will have an idea of the energy and resources deployed on its construction. No other Harappan site has so far come up with such a huge water structure (as long as two-and-a-half football fields!). In view of stone anchors and marine shells found in it, S.R. Rao, the excavator, identified it as a tidal dockyard: at high tide, boats sailing up the Gulf of Cambay would have easily pushed on upstream the Bhogavo before berthing at Lothal’s basin."