Towards five in the afternoon I struck camp to seek a bivouac for the night, in a better position than the death-trap where we had spent the afternoon, and we halted, in complete darkness and without lighting fires, on a rocky platform that gave us 300 or 400 yards of open ground to fire over on all sides. Thanks to these measures, we were able to spend the rest of the night in peace. Next day we went a little further down the valley in search of pasturage for our camels, worn out with hunger and fatigue; their condition left small hope of undertaking the excursion I had planned in the direction of Kozen and Goumeur, from which we were still separated by two or three ridges very difficult to cross, and where—so at least our prisoners said—neither pasture nor water could be found in readily accessible situations. When it is added that I had no news of the Bardai detachment which I had hoped to meet there, it will be understood that I thought best to advance in its direction two days’ march further west, into the valley of Zoumri, where I was informed of the presence of friendly tribes who could probably supply me with some information about its movements. These two marches were very hard on our animals. To cross from one valley to the other we had to make our way up a wearisome succession of ravines and steep slopes, one of which, on the sides of a spur of a precipitous cliff, cost the detachment a hard piece of work in making a flight of rough steps up which the camels, though completely unloaded, had the utmost difficulty in climbing. On the other hand, I had the good luck to see before me, on the east and north-east, a vast horizon of mountains which extended and confirmed the observations made on the summit of Emi Koussi, and made certain that the Tibestian massif, far from being limited to the simple mountain chain hitherto marked on the maps of Africa, stretched away for more than 100 miles into the interior of the Lybian desert. During the two hours required for the hard climb up this cliff I kept on taking observations of the numerous summits visible in the limpid distances of that ocean of rocks, summits that seemed to rise like a succession of landmarks along each of two or three long ridges in sharp and jagged peaks, equal in bulk and perhaps in height with those of the great western chain, of which a few outlines appeared in the gaps between the nearer ranges. But in face of this accumulation of lofty peaks I felt a bitter vexation, a sort of resentment against my own littleness and powerlessness to set in order their apparent chaos. For it would have needed many a long excursion made with two or three fresh camel-trains, and a further provision of supplies, to enable me to straighten out the seeming tangle of these valleys and the confusing intersection of the hills.