The castle, which at the time of our visit was the chief instrument in the hands of the Turks for overawing the mountaineers, contained a garrison of four hundred soldiers. It has only one bastion with three guns, at the southern corner, and was found by Mr. Overweg to be 2150 feet above the level of the sea. The high cliffs inclosing the valley are most beautifully and regularly stratified in layers of gypsum and limestone; and a man may walk almost round the whole circumference of the ravine on the same layer of the latter stone, which has been left bare,—the gypsum, of frailer texture, having been carried away by the torrents of rain which rush violently down the steep descent. From the little eminence above mentioned, there is a commanding view over the valleys and the high plain towards the south. After our tent had been pitched, we received a visit from Haj Rashíd, the Kaimakám or governor, who is reckoned the second person in the Bashalík, and has the whole district from Zwára as far as Ghadámes towards the S.W., and the Tarhóna towards the S.E., under his military command. His salary is 4600 mahhbúbs annually, or about 720_l._ He had previously been Basha of Adana, in Cilicia; and we indulged, to our mutual gratification, in reminiscences of Asia Minor. [Sidenote: Saturday, February 9th.] Early in the morning I walked to a higher eminence at some distance eastward from the castle, which had attracted my attention the day before. This conspicuous hill also was formerly crowned with a tower or small castle; but nothing but a solitary rustic dwelling now enlivens the solitude. The view was very extensive, but the strong wind did not allow of exact compass observations. While my companion remained near the castle, engaged in his geological researches, I agreed with our shoush and a Zintáni lad whom I accidentally met here, and who on our journey to Fezzan proved very useful, to undertake a longer excursion towards the west, in order to see something more of this interesting and diversified slope of the plateau.