What is the setting of Season of Migration to the North by Tayeb Salih?

There are various settings for the action of the novel. Most of the novel takes place in various locations in The Sudan, with references to events that occurred in London. The setting for most of the action is a small, unnamed village along the Nile. This is the village where the narrator was born and raised and returns to after his schooling in England. This is the village where Mustafa Sa'eed settled.