Our Tibetan friends asked what we were going to do, and begged me to stop there to talk and drink tea. I said I had had quite enough of both, and would proceed. "If you go on we will kill you," said one of the soldiers, getting into a temper, and taking advantage of our politeness towards him and his mates. "_Nga samgi ganta indah_" ("If you please"), I answered with studied courtesy. "If you go another step, we will cut off your head, or you will have to cut off ours," cried two or three others, stretching their bare necks towards me. "_Taptih middu_" ("I have not got a small knife"), I replied, quite seriously, and with assumed disappointment, twirling my hand in the air in Tibetan fashion. The Tibetans did not know what to make of me, and when I moved towards the pass, on which hundreds of flying prayers flapped in the wind, after politely bidding them good-bye with tongue out, and waving both my hands palms upwards in front of my forehead in the most approved Tibetan style, they took off their caps and humbly saluted us by going down on their knees and putting their heads close to the ground. We crossed the plain, and slowly wended our way up the pass. Near the top we came to a track, the highway from Ladak to Lhassa _via_ Gartok, along the northern side of the Rakstal, Mansarowar and Gunkyo Lakes. On the pass itself were planted several poles connected by means of ropes, from which flying prayers waved gaily in the breeze. _Obos_, or mounds of stones, had also been erected here. The slabs were usually white, and bore in many instances the inscription "_Omne mani padme hun_." Yak skulls and horns, as well as those of goats and sheep, were laid by the side of these Obos, the same words being engraved on the bone and stained red with the blood of the animal killed. These sacrifices are offered by Tibetans when crossing a high pass, especially if there is a Lama close at hand to commemorate the event. The meat of the animal killed is eaten by the people present, and, if the party is a large one, dancing and singing follow the feast. As I have already remarked, these Obos are found all over the country; they indicate the points marking the passes or summits of hills, and no Tibetan ever goes by one of them without depositing on it a white stone to appease the possible wrath of their God. CHAPTER LX The Maium Pass--Into the Yutzang province--Its capital--The Doktol province--Orders disregarded--The sources of the Brahmaputra--Change in the climate--The valley of the Brahmaputra--Running risks.