text: To the southwest of a salt flat in this region lie the ancient ruins of the Oracle of Ammon.
full_question: To the southwest of a salt flat in this region lie the ancient ruins of the Oracle of Ammon. Its highest point is used as a close analogue to Elysium Mons on Mars but has more furrows due to water. Large amounts of meteorites were found in a strewn field north of Taoudenni in this region’s (*) Erg Chech. Drought in this desert caused unconstrained population growth in Nouakchott. To the south of this desert lies the Sahel and the Niger River, while the Atlas mountain range and the Mediterranean lie to the North. Tunisia, Chad, and Sudan for 10 points, contain what largest hot desert?
first_sentence: To the southwest of a salt flat in this region lie the ancient ruins of the Oracle of Ammon.