First of all, the waters of the system flow southwestward and empty out right here on the south coast.

首先，该水系的水流向西南方向流动，在南海岸这里清空。

Yet it wasn't always this way. 100 million years ago, during a period known as the Mid-Cretaceous, a gargantuan river system flowed across the region from modern day Egypt to Morocco.

然而，情况并非总是如此。一亿年前，在白垩纪中期，一条庞大的河流系统从现代埃及流经该地区，一直流向摩洛哥。