Note 51 — Chapter I · JOURNEY FROM DARJILING TO TASHILHUNPO.
Reading edition
Po phug was reached after a march of three miles through the snow, then the ascent became steeper and freer from snow, and we came to Luma goma, “Fountain head,” the source of the Yangma river; and after an easy ascent of half an hour we arrived at Tsa-tsam, the limit of vegetation.51