Grocery products lie next to coca paste worth $110,000 Colombian pesos at a local store in Guyabero Region, Guaviare, Colombia, May 24, 2016. As the government nears a historic peace deal with the rebels of the Revolutionary Armed Forces of Colombia (FARC), the nation's authorities are struggling to tame an increase in farming of coca, the raw material used to make cocaine. In the Guyabero Region, where many people work on coca plantations, locals barter coca paste to buy groceries at the local shop. Many farmers, who according to the U.N. Office of Drugs and Crime earn an average of $1,000 a year, are well aware of the harmful uses of their crops but say they have no other choice. (Photo by John Vizcaino/Reuters)





Grocery products lie next to coca paste worth $18,000 Colombian pesos at a local store in Guyabero Region, Guaviare, Colombia, May 24, 2016. (Photo by John Vizcaino/Reuters)





Grocery products lie next to coca paste worth $32,000 Colombian pesos at a local store in Guyabero Region, Guaviare, Colombia, May 24, 2016. (Photo by John Vizcaino/Reuters)





Beverages lie next to coca paste worth $30,000 Colombian pesos at a local store in Guyabero Region, Guaviare, Colombia, May 24, 2016. (Photo by John Vizcaino/Reuters)





Canned goods lie next to coca paste worth $26,000 Colombian pesos at a local store in Guyabero Region, Guaviare, Colombia, May 24, 2016. (Photo by John Vizcaino/Reuters)





A worker shows coca paste after drying it on a stove top at a small farm in Guayabero, Guaviare province, Colombia, May 23, 2016. (Photo by John Vizcaino/Reuters)





Crushed coca leaves mixed with chemicals soak in a barrel at a small farm in Guayabero, Guaviare province, Colombia, May 23, 2016. (Photo by John Vizcaino/Reuters)





A worker strains coca paste at a small farm in Guayabero, Guaviare province, Colombia, May 23, 2016. (Photo by John Vizcaino/Reuters)





A worker dries coca paste on a stove top at a small farm in Guayabero, Guaviare province, Colombia, May 23, 2016. (Photo by John Vizcaino/Reuters)





A worker shows as the processed coca leaves settle as coca paste on the bottom of a plastic bottle, on a small farm in Guayabero, Guaviare province, Colombia, May 23, 2016. (Photo by John Vizcaino/Reuters)





A worker adds chemicals to the already processed coca leaves to make coca paste, on a small farm in Guayabero, Guaviare province, Colombia, May 23, 2016. (Photo by John Vizcaino/Reuters)





Cleaning products lie next to coca paste worth $18,000 Colombian pesos at a local store in Guyabero Region, Guaviare, Colombia, May 24, 2016. (Photo by John Vizcaino/Reuters)





Chicken, fish and eggs lie next to coca paste worth $14,000 Colombian pesos at a local store in Guyabero Region, Guaviare, Colombia, May 24, 2016. (Photo by John Vizcaino/Reuters)





Rice and vegetables lie next to coca paste worth $8,000 Colombian pesos at a local store in Guyabero Region, Guaviare, Colombia, May 24, 2016. (Photo by John Vizcaino/Reuters)





Vegetables lie next to coca paste worth $8,000 Colombian pesos at a local store in Guyabero Region, Guaviare, Colombia, May 24, 2016. (Photo by John Vizcaino/Reuters)





The wrapped fingers of a raspachin, a worker who collects coca leaves, are seen during the harvest of the leaves on a small coca farm in Guayabero, Guaviare province, Colombia, May 23, 2016. (Photo by John Vizcaino/Reuters)





Raspachines, workers who collect coca leaves, carry bags with harvested leaves to be processed into coca paste, on a coca farm in Guayabero, Guaviare province, Colombia, May 23, 2016. (Photo by John Vizcaino/Reuters)





A worker walks over crushed coca leaves, mixed with chemicals, as part of the process to make coca paste, on a small farm in Guayabero, Guaviare province, Colombia, May 23, 2016. (Photo by John Vizcaino/Reuters)





Fumigation equipment is seen outside a shack at a small coca farm in Guayabero, Guaviare province, Colombia, May 23, 2016. (Photo by John Vizcaino/Reuters)





A worker sprays chemicals over crushed coca leaves as part of the process to make coca paste, on a small farm in Guayabero, Guaviare province, Colombia, May 23, 2016. (Photo by John Vizcaino/Reuters)