our world travelled to the cauca valley in the country to find that farmers are now caught between new criminal gangs with devastating consequences. for years, i have been reporting on the uk's voracious appetite for illegal drugs. i have watched the market being flooded by cocaine that's cheaper than ever. so i've come to colombia, where 70% of the world's cocaine is produced, to find out why. i'm getting rare access, a chance to meet the cocaine producers in one of the most dangerous places in south america. and to meet the smugglers who are sending the drugs abroad. how many of those shipments would you expect to reach europe? criminal gangs are killing anyone who stands in their way. those gangs are never far away. some armed men have been spotted nearby. i want to discover what's happening now in colombia that's making cocaine in the uk more available than it's ever been. for 50 years, colombia was home to the world's longest running civil war but in 2016, a historic peace deal was signed with the main rebel group, the farc. a new future was the promise — newjobs, new roads — all