sentences:  According to Herodotus, more than four thousand years ago natural asphalt was employed in the construction of the walls and towers of Babylon, great quantities of it were found on the banks of the river Issus, one of the tributaries of the Euphrates, and this fact confirmed by Diodorus Siculus.Herodotus mentioned pitch spring on Zacynthus (Ionian islands, Greece).Also, Herodotus described a well for bitumen and oil near Ardericca in Cessia.