It is Arabic and and 90% practice Islam as their religion
It is called a flood plain because it is a big wide space in which allows the water to flow currently.
In fact, since the Moon is constantly rotating on it's own axis, there is no area of the planetoid which is permanent darkness, and the far side of the Moon is only completely devoid of sunlight during a Full Moon - when the Sun is facing the Moon with the Earth in between.
The world would look like straight up water bro