Troops and pack animals climb a steep mountain pass near Lingtu on their way to Tibet during the expedition led by British Army officer and explorer Colonel Sir Francis Younghusband (1863 - 1942), November 1903. The mission resulted from disputes over the Sikkim - Tibet border and ended with the British occupation of Lhasa.
Original Publication: The Graphic - Pub. 30th January 1904
(Photo by The Graphic/Hulton Archive/Getty Images)