From Kandahar (elsewhere described)--which is considered by General Hamley and other authorities, one of the most important strategic points in any scheme of permanent defence for India--diverge two main roads: one a continuation of the Quetta-Herat route bearing N.W., and one running N.E. to Kabul. Gen. Biddulph says: "The position of Kandahar near to the slopes of the range to the westward of the city renders it impossible to construct works close at hand to cover the road from Herat. The high ridge and outlying hills dividing Kandahar and its suburbs from the Argandab valley completely command all the level ground between the city and the pass. Beyond the gap a group of detached mountains extends, overlooking the approaches, and follows the left bank of the Argandab as far down as Panjwai, fifteen miles distant. Positions for defensive works must be sought, therefore, in front of that place on the right bank of the river. To the N.E. of Kandahar the open plain affords situations for forts, well removed from the hills, at a short distance, and at Akhund Ziarut, thirty miles on the road to Ghazni, there is a gorge which would, if held, add to security on that quarter." The country between Kandahar and the Helmund has the same general characteristics--plains and mountain spurs alternately,--and while generally fit for grazing is, except in a few spots, unfit for cultivation. According to the eminent authority just quoted, the great natural strategic feature of this route is the elevated position of Atta Karez, thirty-one miles from Kandahar. He says: "On the whole road this is the narrowest gateway, and this remarkable feature and the concentration of roads [Footnote: The roads which meet at Atta Karez are: the great Herat highway passing through Kokeran and crossing the Argandab opposite Sinjari, whence it lies along the open plain all the way to Atta Karez; the road which crosses the Argandab at Panjwai; and the road from Taktipul towards Herat.] here, give to Atta Karez a strategic importance unequalled by any other spot between India and Central Asia." General Biddulph examined this position carefully in 1879, and discovered a site for a work which would command the valley of the Argandab and sweep the elevated open plain toward the west and northwest. Abbaza is a village at the crossing of the Herat road over the Helmund, forty-six miles west of Atta Karez. On the west bank lies the ancient castle of Girishk. The country between the Argandab and the Helmund is rolling and inclining gradually from the hills toward the junction of these rivers. The plateau opposite Girishk is 175 feet above the river, which it commands. The Helmund has already been described. There are numerous fords, but, at certain times, bridges would be required for military purposes. The land in the vicinity of the Helmund is very fertile and seamed with irrigating canals.