A remarkable peak called Téngik or Tímge towers over this mountain mass, being, according to the intelligent old chief Ánnur (who ought to be well acquainted with his own country), the most elevated point in the whole country of Aïr. Unfortunately our situation in the country was such that we could not think of exploring this very interesting northern barrier, which must be supposed to possess many beautiful glens and valleys. But we were still at some distance from these picturesque mountains, and had to cross a very rugged and dreary waste, where, however, we caught sight of the first ostrich as yet seen on our journey. We encamped at length in a shallow valley devoid of any interesting features. During the night, while I was on the first watch, walking round the encampment of the caravan, it struck me that at one end of it, beyond the Kél-owí, a small party was separately encamped. When I went there the first time all was quiet; but a little after eleven o’clock (for in general, on such a journey, every one lies down at an early hour), hearing a noise on that side, and turning thither, I saw two armed Tuarek saddle their mehára, and make off in the gloom of night. From this circumstance I concluded that something was still going on against us; but as it appeared useless to make an alarm, I only took the precaution to put Overweg, who succeeded me on the watch, upon his guard. _Tuesday, August 27._—We started at a very early hour; but fortunately the moonlight was so clear and beautiful that I was not interrupted for a moment in marking down all the features of the country—at least along our route, for our situation was now too precarious to allow of our observing angles to fix the exact position of mountains lying at some distance from us. The road in general continued rugged for the first six miles, and formed at times very difficult passes; but, notwithstanding these obstacles, the whole caravan kept as close together as possible, and so frustrated the plans of our persecutors, who, as we concluded from the appearance of several Mehára in the distance, intended to attack us on the road, if occasion offered. There are two roads, the easternmost of which passes further on through a remarkable gorge in the mountains, which we had for a long time ahead of us. Here, where we turned off with a westerly deviation, beautiful white marble, but slightly weatherworn on the surface, appeared between the nodules of granite and gneiss, while on our right we had a rocky ridge called Itsa, the crest of which was indented in a most remarkable way. Further on, where for a while we entered on a gravelly soil, the whole ground was covered with fresh footsteps of camels and men, and there was not the least doubt that another host was gathering against us. [Illustration]