Travels in the Tibet (English Edition)

At the highest point I made, as usual, a fairly long halt to take
observations, while Tsering's detachment filed past me, and the yaks
tramped, grunting, over the Marsimik-la. The absolute height was 18,343
feet, the sky was partly clear, and it was as warm as in an oven, though
the temperature had risen only to 34.7°. Before we began to move again
the tail of the procession had vanished behind the point of rock which
marks the entrance to the valley that leads downwards.