This picture, with one of us walking in the (ex)covered way shows the size of the structure. Once home, I made some research and finally found that this wall was what limited the Roman Empire towards the South and was designed to prevent looters to ruin the wealthy Roman Africa !
You can find more recent pictures (2002) of the wall on my Tunisia page under "off the beaten path"
Not far from the "limes", on the northern side of the mountain, a small "bordj" (a fort) stands at a certain distance of the trail. We did not see how we could go and visit it, so there will not be any other picture of this amazing place than must be relatively modern.
Once we drove closer and could reach it, we discovered that it was a defense wall which seemed to have been covered on all its length while in the center, the cover had collapsed. Soldiers could walk from one end to the other, unseen and tiny opening in the structure allowed watching (or more !)
The first time we arrived at the pass between Djebel Sif El Leham (538 m) on the right and Djebel Hachichina (515 m) on the right we were very surprised to see a structure that ran across the mountain from one summit to the other.
Behind a bend, we found ourselves in the middle of a herd of a good hundred of camels grazing. They seemed to be on their own, but there was certainly someone that kept them, may be from some distance. As long as we stayed in the car, they went on grazing but once we went out, they walked away.
At one moment, the trail became steeper and rockier. This were the slopes of Djebel Sif El Leham which tops at 538 m. This part would have been difficult with another car. Driving this trail was considered as difficult. We found it was not that difficult, given that you paid attention.
The acacia (Acacia radiana) is a typical sight of the Sahara. Often you will find one, which is the only shade for several kilometers around. But beware, it has very sharp and strong spines. Pay attention where you walk, especially if you are bare foot or with light shoes as it can easily pierce the sole. Beware also for your car : it is the main source of puncture in the Sahara.
In the desert, if you look carefully, you will realize that there are plenty of plants growing and flourishing. Most are very small but others can be good size shrubs as this one; I will add its name but presently, I cannot find it.
Chott El Fedjadj is about 50 km. You know you are out of the chott when there begin to be palm trees and various shrubs. If you enlarge the photo, you will see that the large shrub in the foreground is dotted with beautiful small purple flowers.
If you followed the trail, there was no problem, it was in very good condition, but it was narrow, almost single lane. Fortunately, there was very little traffic because crossing another car, or, worse a truck, could be dangerous. From time to time along the trail, there were marks of cars that had been to much away from the main trail and had been stuck. From what remains, the drivers must have dug long hours before being able to get their car out. No problem any more with the paved road.
On the previous photo, there did not seem to be a trail. Actually, there was one, which was a very low levee. If you enlarge the picture, you will see on the horizon a mirage : it looks like a forest reflecting in water while it is in fact tiny tuft of grass at the edge of the chott and there is no water at all !
When there was no road, the landscape was what is shown on this picture : a completely flat land, no trees, no plant, no birds, nothing. If there was not our Landrover, the picture would be divided in two parts : the white sky on top, the dry mud of the soil below and a stright line between. !
The new road is in perfect condition and allows driving across the Chott El Fedjajd safely. However, it is always windy, as always in the desert. In this part, probably because of the neighbourhood of the sea (100 km), there is a dominant wind that distorts the trees.
From Kebili, the shorter route to Gafsa runs across Chott El Fedjadj by C 103. It is now a good paved road but the first time we took it in 1974 and even in 1978 it was a dirt trail on a tiny levee across the chott.