In this Jan. 26, 2015 photo, poppy flowers grow in the mountains of the Sierra Madre del Sur in Guerrero state, Mexico. The multibillion-dollar Mexican opium trade starts here, where Mexican farmers are feeding a growing addiction in the U.S. (AP Photo/Dario Lopez-Mills) (The Associated Press)
SIERRA MADRE DEL SUR, Mexico – Red and purple blossoms with fat, opium-filled bulbs blanket the remote creek sides and gorges of the Filo Mayor mountains in the southern state of Guerrero.
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