'Lo! where the pass expands Its stony jaws, the abrupt mountain breaks, And seems, with its accumulated crags, To overhang the world.' SHELLEY. Early the next morning, before the sun had risen, we started for the Mazeno La, which should lead us into the wild and unknown Chilas country. We soon experienced the kind of walking that afterwards we found to be more often than not the rule. Loose stones of every size and description lay piled between the edge of the glacier and the side of the valley, and it was useless to attempt to walk on the glacier itself, for not only was it buried deep with debris, but was crevassed as well. For some distance we followed the northern or left bank, passing by the snout of a small ice-fall that came down from the main range of Nanga Parbat, and then turned to the right up and over an intervening spur, which finally brought us to the level of the glacier that lay immediately under the Mazeno La. Across this our path lay in the burning sun of the morning. Before us, about 1500 feet higher up, was the pass; first the glacier was crossed, and then partly by rocks and partly over soft snow the way led upwards. Within a few hundred feet of the summit (18,000 feet) I experienced a violent attack of mountain sickness, and was hardly able to crawl to the top. This was the only time any of the party suffered at all, and later a slight headache or lassitude was the only symptom that I ever felt, even when at heights up to 20,000 feet. The western face of the pass is much more precipitous than the one we had ascended, but by making use of an easy rock arête we soon got down (2000 feet) to the more level glacier below. The Mazeno La on the western side somewhat resembles the Zinal side of the Triftjoch, but is not quite so difficult. The more active of our coolies, together with servants, were sent on with the instructions to camp on the right-hand side of the glacier as soon as they should come to any bushes out of which a fire could be made, but we were not destined that evening to camp in any comfort. Caught on the glacier by the darkness we were forced to sleep for the night on a small plot of grass on the edge of the side moraine, 13,400 feet, and not till the next morning did we rejoin our coolies about a mile and a half lower down the valley. After we had obtained sufficient to eat we started down beside the glacier, which I have named the Lubar glacier on account of the small shepherds' encampment of that name just below the end of it. On our arrival at Lubar we made our first acquaintance with the Chilas folk, some of whom looked very wild and unkempt, but throughout our expedition we found them to be friendly enough, and never experienced any difficulty with them. Some sour and particularly dirty goats' milk out of huge gourds was their offering to us, and a small sheep, price four rupees, was purchased.