For a mile or two beyond the end of the Iskardo plain, the mountains are sufficiently far apart to allow of the interposition of a narrow platform of conglomerate, over which the road runs. Soon, however, even this disappears, and thenceforward, as far as I went, the Indus runs through a narrow ravine of very uniform character. The mountains on both sides of the river are extremely steep, and, so far as I could judge at so early a season, almost uniformly rocky and precipitous. At distant intervals a small platform of alluvium is interposed between the cliffs and the river, but much more frequently precipices directly overhang the stream, or steep bare rocks, only not absolutely precipitous, rise from its margin. It is but seldom that the stony bed of the river or the alluvial platforms overhanging it, afford a level road for a few hundred yards at a time. In general the path continually ascends and descends over each successive ridge; the elevation to which it is required to ascend to find a practicable passage, varying from a few hundred to several thousand feet above the bottom of the valley. In at least eight or ten places between Iskardo and Rondu, the path ascends or descends by means of ladders placed against the face of a perpendicular wall of rock, or crosses fissures in the cliffs by planks laid horizontally over them. This road is therefore quite impracticable for beasts of burden or horses, and is never used except in winter, when no other route is open to the traveller.
[Sidenote: INDUS VALLEY. _February, 1848._]
As the road lies altogether on the north or right bank of the Indus, the elevation and appearance of the mountains on that side cannot well be seen. This range separates the Indus valley from that of Shigar, which is in no part of Rondu more than twenty-five miles distant, and is crossed in several places by passes at the head of the larger ravines. These passes being still blocked up with snow, I could not cross them, nor ascertain their elevation, which is perhaps nowhere less than fourteen or fifteen thousand feet, except at the very eastern extremity of the ridge.
From the higher parts of the road, where it attained an elevation of eight and nine thousand feet, the mountain ranges on the south of the Indus could be well seen. They were covered with snow from base to summit, and in general rose so very abruptly, that the nearer spurs completely concealed from view the main range, except when a more open valley than usual permitted the view to extend backwards. Occasionally very lofty peaks were seen, which appeared to attain a height of at least eighteen or twenty thousand feet; but, as the whole landscape was covered with snow, distances could not be estimated with any accuracy. As the ridge to the south of the Indus keeps very close to the river, it is probable that the highest summits seen in that direction were situated beyond the valley of Hasora.