This famous lake, according to Herodotus, with whose account Diodorus Siculus and Mela agree, was entirely an artificial excavation, made by king Moeris, to carry off the overflowing waters of the Nile, and reserve them for the purposes of irrigation. It was, in the time of Herodotus, 3,600 stadia or 450 miles in circumference, and 300 feet deep, with innumerable canals and reservoirs. Denon, Belzoni, and other modern travelers, describe it at the present time as a natural basin, thirty or forty miles long, and six broad. The works, therefore, which Herodotus attributes to King Moeris, must have been the mounds, dams, canals, and sluices which rendered it subservient to the purposes of irrigation. These, also, would give it the appearance of being entirely the product of human industry.