Akha hills tribeswomen gather during a visit by the United Nations Office for Drugs and Crime (UNODC) in the Phongsali province of Laos in this February 15, 2006 file photograph. In concert with donors and the UNODC, Laos has gone from being the world's third biggest producer of heroin, which comes from opium resin, in 1998 to declaring itself free of poppy cultivation in February 2006. File photograph taken February 15, 2006. To match feature LAOS-OPIUM REUTERS/Adrees Latif