The central artery of the country is the Nile. The river provides the land with sweet water for drinking and irrigation. On the banks of the river you find most of the towns and villages, but also the green fields for agriculture. In the time of the pharaohs this artery of life was the centre of culture, where they built their temples. The Nile delta is the fertile triangle, where the branches of the Nile meet the Mediterranean.
For the rest the country is mostly desert, with here and there an oasis. The Western Desert is the region between the Nile and Libya, which is a very dry area with almost no vegetation. What you do find is several oases in an enormous depression, where agriculture is taking place.