The low sandy or sandstone hills, which form the outskirts of the Himalaya, are not, on the road from Firozpur to Simla, anywhere of greater elevation than a few hundred feet. A few miles beyond the entrance, the valley, which has a considerable slope, widens as it approaches the more lofty mountains, and the sandstone cliffs are replaced by rounded hills, probably of a more ancient rock, covered with soil and vegetation.
At the very base of the steep mountains is situated the village of Kalka, at which, as it is the termination of palankin travelling, travellers in general stop, to arrange for the continuance of their journey. Situated close to the source of the little stream which I had been following since I had entered the hilly country, and surrounded on all sides by low hills, Kalka has an elevation of perhaps 2000 feet above the level of the sea, or 1000 feet above the plain on the outside of the sandstone hills.
The general aspect of the low hills around Kalka is barren and uninviting; it was especially so at the season of my visit, when the great heat had scorched the herbaceous vegetation, and all nature had a burnt-up appearance. The subtropical valleys are not here, as farther to the east along the base of the mountains, filled with dense forest. They are in general bare, a few scattered trees only appearing here and there. In the level part of the valley, at the very entrance, where the soil was still of some depth, _Acacia Arabica_ and _Butea frondosa_, the most prevailing trees of the plains beyond, were frequent; but the stony water-courses contained little but a bamboo, and the hill-sides were covered with scattered bushes of the more ordinary shrubs of the plains of Northern India, and presented few features of interest.
[Sidenote: ASCENT TO KUSSOWLEE. _May, 1847._]
Immediately on leaving Kalka, a long and steep ascent commenced, continuing for about ten miles, to the military post of Kussowlee, which occupies the crest of the ridge overlooking the Kalka valley, and can be seen throughout the greater part of the ascent, overhanging the winding road, which has been constructed along the side of the mountain. The elevation of Kussowlee is about 6500 feet, an altitude at which the climate in the Himalaya is perfectly temperate, so that during the ascent a traveller from the plains of India meets with a complete change of climate, a change, too, which in the month of May, the period of my visit, is particularly grateful, the heat below being most oppressive and disagreeable.