Colombia, Sierra Nevada De Santa Marta, Kogi Tribe, Detail Of A Kogi Man Holding His Poporo/Gourd Of Fine Lime Powder Made From Burnt Seashells Collected Along Caribbean Coast. The Palito/Stick Transfers Lime Powder From Gourd To Mouth And Wad Of Coca Leaves Held In Cheek. Lime Acts As Catalyst Releasing Very Small Amount Of Cocaine Alkaloid From Coca Leaves This Has Effect Of Deadening Pangs Of Hunger Keeping Person Awake And Giving Sense Of Wellbeing