The next long day's ride terminated at Singlak (another unknown place), which was found deserted owing to a feud between the Hazaras and Firozkohis. It was evidently within the Murghab basin and short of the crest of the line of watershed bordering the Hari Rud valley on the north, for the following day Ferrier crossed these hills, and the Hari Rud valley beneath them (avoiding Daolatyar), at a point which he fixes as "six parasangs S.W. of Sheherek." Again it is impossible to locate the position. Kila Safarak is at the head of the Hari Rud, and Kila Shaharak is in another valley (that of the Tagao Ishlan), so that it will perhaps be safe to assume that it was nowhere near either of these places, but at a point some 10 miles west of Daolatyar, which marks the regular route for Ghur from the north. Ferrier's description of this part of his journey is vague and unsatisfactory. No such place as Kohistani, "situated on a high plain in the midst of the Siah Koh," is known any more than is Singlak. The divide, or ridge, which he crossed in passing from the Murghab valley to the narrow trough of the Hari Rud is lower than the hills on the south of the river. He could not possibly have crossed snow nor overlooked the landscape to Saripul. It is doubtful if Chalapdalan, the mountain which impressed him so mightily, is visible from any part of the broken watershed north of the Hari Rud. Chalapdalan is only 13,600 feet high, and there would have been no snow on it in July. As we proceed farther we fail to identify Ferrier's Tingelab River, unless he means the Ab-i-lal. The Hari Rud does not flow through Shaharak, and no one has found a village called Jaor in the Hari Rud valley. Continuing to cross the Band-i-Baian (which he calls Siah Koh) from Kohistani Baba, a very long day's ride brought him to Deria-dereh, also called "Dereh Mustapha Khan," which was evidently a place of importance and the headquarters of a powerful section of either Hazaras or Taimanis under a Chief, Mustapha Khan. Here, in a small oblong valley entirely closed by mountains, was a little lake of azure colour and transparent clearness which lay like a vast gem embedded in surrounding verdure ... "around which were somewhat irregularly pitched a number of Taimani tents, separated from each other by little patches of cultivation and gardens enclosed by stone walls breast high.... The luxuriance of the vegetation in this valley might compare with any that I had ever seen in Europe. On the summits of the surrounding mountains were several ruins, etc. etc." Ash and oak trees were there. Fishermen were dragging the lake, women were leading flocks to the water, and young girls sat outside the tents weaving bereks (barak, or camel-hair cloth), and contentment was depicted on every face.