A young herdsman in the southern Colombian town of La Macarena, an area held by rebels until recently. Approximately 40 percent of the Colombian countryside is under the control of leftist groups.

Downtown Puerto Asis, the largest town in southern Colombia's Putumayo region where most of the world's coca is grown. Both FARC guerrillas and AUC paramilitaries operate in and around Puerto Asis.

A small coca plantation 60 miles outside of Puerto Asis. Many of Colombia's coca plots are operated by farmers who can no longer sustain themselves with legal crops.

A fighter of the Revolutionary Armed Forces of Colombia (FARC) at a guerrilla roadblock on a highway near San Vicente in southern Colombia.

FARC guerrillas stand guard at a checkpoint on the road to Los Posos, site of failed peace talks between the rebels and Colombian government.

Paramilitary fighters of the United Autodefenses of Colombia (AUC) patrol Colombia's southern Putumayo department. Putumayo is the coca?growing capital of the world, a landscape hotly contested by leftist guerrillas and the right-wing AUC.

Fighters of the right-wing United Autodefenses of Colombia (AUC) at a camp in Putumayo, southern Colombia.

Government soldiers of the antiguerrilla battalion leave a combat zone in southern Colombia after fighting with FARC rebels.