The History Of Herodotus Volume 1 of 2
Page: 21982. This is what I heard about the number of the Scythians. Now this land has no marvellous things except that it has rivers which are by far larger and more numerous than those of any other land. One thing however shall be mentioned which it has to show, and which is worthy of wonder even besides the rivers and the greatness of the plain, that is to say, they point out a footprint of Heracles in the rock by the bank of the river Tyras, which in shape is like the mark of a man's foot but in size is two cubits long. This then is such as I have said; and I will go back now to the history which I was about to tell at first.
83. While Dareios was preparing to go against the Scythians and was sending messengers to appoint to some the furnishing of a land-army, to others that of ships, and to others the bridging over of the Thracian Bosphorus, Artabanos, the son of Hystaspes and brother of Dareios, urged him by no means to make the march against the Scythians, telling him how difficult the Scythians were to deal with. Since however he did not persuade him, though he gave him good counsel, he ceased to urge; and Dareios, when all his preparations had been made, began to march his army forth from Susa.
84. Then one of the Persians, Oiobazos, made request to Dareios that as he had three sons and all were serving in the expedition, one might be left behind for him: and Dareios said that as he was a friend and made a reasonable request, he would leave behind all the sons. So Oiobazos was greatly rejoiced, supposing that his sons had been freed from service, but Dareios commanded those who had the charge of such things to put to death all the sons of Oiobazos.
85. These then were left, having been slain upon the spot where they were: and Dareios meanwhile set forth from Susa and arrived at the place on the Bosphorus where the bridge of ships had been made, in the territory of Chalcedon; and there he embarked in a ship and sailed to the so-called Kyanean rocks, which the Hellenes say formerly moved backwards and forwards; and taking his seat at the temple 83 he gazed upon the Pontus, which is a sight well worth seeing. Of all seas indeed it is the most marvellous in its nature. The length of it is eleven thousand one hundred furlongs, 84 and the breadth, where it is broadest, three thousand three hundred: and of this great Sea the mouth is but four furlongs broad, and the length of the mouth, that is of the neck of water which is called Bosphorus, where, as I said, the bridge of ships had been made, is not less than a hundred and twenty furlongs. This Bosphorus extends to the Propontis; and the Propontis, being in breadth five hundred furlongs and in length one thousand four hundred, has its outlet into the Hellespont, which is but seven furlongs broad at the narrowest place, though it is four hundred furlongs in length: and the Hellespont runs out into that expanse of sea which is called the Egean.