The Sudan was an area in Africa, located near Egypt.
The Sudan was located near Egypt and the Valley of the Kings, (AUDIO: False Gods) with the River Nile running through both areas. The city of Dunqulah was also located in the there. (AUDIO: The Destroyer of Delights)
During the 9th century, the Fifth Doctor and Abby visited Sudan during their search for the Key to Time. (AUDIO: The Destroyer of Delights)
After Jane Templeton crash-landed in Egypt, some centuries before 1902, she and Antak were worshipped as gods. After a while, a crop failure forced them to flee to the Sudan. (AUDIO: False Gods)
Sudan was among the places where Winston Churchill fought while serving in the British Army. (AUDIO: The Oncoming Story)