[National Geographic Wallpaper] Mexican Cattle herd (멕시코 소떼)
Puebla State, Mexico
Villagers direct cattle along an evacuation route near Popocat??petl, one of the world's tallest active volcanoes.
"Making the physical arrangements to get people out of threatened villages is one thing, but convincing people with little formal education, whose lives unfold with the cycles of nature, that they have some control over their destiny is quite another," wrote A. R. Williams in the January 1999 National Geographic magazine.
(Photographed on assignment for, but not published in, "Popocat??petl: Mexico's Smoking Mountain," January 1999, National Geographic magazine)