Emerging from the Long Sap near the mouth of Chailak Dere, and proceeding along the flats sheltered after this attack by a parapet for about 1000 yards, one reaches the Aghyl Dere, which runs fairly parallel with the other two in its lower course, but splits into two Deres about a mile from the mouth, the right-hand tributary converging rapidly with Chailak Dere, till they almost meet at the foot of Chunuk Bair, the left-hand tributary bearing away north-east towards the foot of Hill Q and Koja Chemen Tepe. The ground between Chailak Dere and Aghyl Dere is chiefly marked by Bauchop’s Hill and Little Table Top. At the source of Aghyl Dere’s southern tributary, high up the front of the mountain, and just at the foot of Chunuk Bair’s precipitous cliff, lies a small patch of cultivated ground, in that year yellow with corn stubble, conspicuous from Suvla and the sea. A few brown sheds and a sort of dwelling stood on the farther side. This was the Farm. [Sidenote: THE MAIN WATERCOURSES] Proceeding northward again along “Ocean Beach” from the mouth of Aghyl Dere, one reaches a Dere commonly called Asmak, though it has other names (Iram Chai or Kasa Dere). This is the main watercourse draining the broad and open valley in which Biyuk (or Greater) Anafarta stands in a beautiful grove of cypresses, about three and a half miles from the sea. Several other Deres in the district are called “Asmak,” and it is probable that the name “Asma,” by which we knew the main tributary to this Dere, is really the same word. But, to keep the distinction, the Asma Dere runs into the Asmak nearly a mile from the mouth, and following its course, instead of going straight on to Biyuk Anafarta, one proceeds by a wide arc southward till the foot of Koja Chemen is reached. There one finds that the source is not far removed from the source of the northern branch of the Aghyl Dere, since both drain the highest section of the main ridge. The large space of ground thus almost enclosed between the Aghyl Dere on the south and the Asmak and Asma Deres beyond is singularly difficult and intricate. The low but steep hills and cliffs are sharply intersected by ravines running in every direction. The district is a jumble of sandy but hard mounds and scarps and fissures, with here and there a narrow slip or tongue of level ground running up among them. Few distinctive features mark locality, but about a mile from the sea stands a mass of low hill or broken plateau called Damakjelik Bair or Hill 40; and about another two-thirds of a mile inland to the north-east, across a brief but steep watercourse called Kaiajik Dere (another tributary to the Asmak), rises a similar but slightly higher mass of low hill or broken plateau called Kaiajik Aghala, soon to be famous as Hill 60. The Asma Dere runs past the farther side of Hill 60, and beyond the Asma rises the steep, long ridge of Abdel Rahman Bair, one of the main northern spurs or buttresses of Koja Chemen itself.