Wells from aquifers dot the eastern slopes of the pronounced long escarpment climbing gradually from 100 m to 500 m in elevation two provinces north in the south extreme of
Gabes Governorate, passing through a thin strip of
Medenine and then at the heart of the province ending around a capital city
Tripoli, Libya. The ridge attracts variable winter and early spring
relief precipitation and little other rain and shares with the rest of the area a
hot desert climate (
Köppen climate classification BWh) with long, extremely hot summers throughout (see
North-south graduation of Tunisian climatic zones), the patchy and infrequent rainfall in winter is greater than the average for the
Sahara Desert of which the area forms part. Approximately half of the escarpment exceeds 500 m in the province, the peak within Tunisia being 631 m near the town of
Remada on the main road south of Tatouine leading into mid-eastern Libya. The tripoint of the three countries is close to the Libyan town of
Ghadames which has surrounding it three airstrips, one of which constitutes an airport and one of which lies in Algeria. Close to the west or south-west border is
El Borma Airport and the province has a second, which is for defence and rescue,
Remada Air Base. ==Administrative divisions==