But luckily there are two rivers, count them, two rivers that flow through this Crescent Valley and as you can see from the map, it looks like a crescent. We're stretching from the Mediterranean Sea in the west across the Middle East in that crescent shape until you get to the Persian Gulf. And the two rivers that flow southeastward across that desert sand are the Tigris and the Euphrates. Maybe you should write that down. And these two rivers, the land in between it is pretty groovy, man. Pretty good land that you're going to want to settle on because it is fertile. Once a year both of these rivers flood and when the water washes away it leaves what's called silt, which is very moist, awesome soil that you can grow lots of barley, lots of wheat, fill your granary, fill your belly and have a good civilization.