en la parte central hay tres cordilleras: la sierra madre occidental la sierra madre oriental y la másas y en algunas partes hay volcanes activos. al norte, en la alta meseta de las montañas se encuentra una gran zona árida. es el desierto de méxico. la península de yucatán está situada al este. aquí, en yucatán, el terreno es llano, no montañoso y parte de la península está cubierta de una densa vegetación. el centro-sur del país es una alta meseta y aquí se encuentra méxico, distrito federal y capital del país. otras ciudades importantes son veracruz, en la costa del golfo de méxico monterrey, en el norte del país y guadalajara, al oeste de la ciudad de méxico. pero el centro político y cultural del país es méxico. méxico no es solamente la ciudad más grande del país sino también la más grande del mundo. ♪ soy pura mexicana, nacida en este suelo ♪ ♪ en esta hermosa tierra de mi linda nación. ♪ ♪ mi méxico querido, qué linda es mi bandera. ♪ ♪ si alguno la mancilla, le parto el corazón. ♪ ♪ iviva méxico! iviva! ♪ iviva américa! ♪ oh, suelo bendito de dios. ♪ iviva méxico! iviva! ♪ ivi

the largest reserves lie in the heart of the cordillera mountains where the revolutionary armed forces of colombia the forks operate at war with the colombian government for over fifty years. no one can penetrate this region without their authorization with the help of divers go betweens we've established contact with the four guerrilla fighters they've authorized us to travel through their zone while waiting to receive us. the local economy is based on coca plant growing these small green leaves on the raw material of cocaine. after years of anti drug enforcement cocoa farming is going through a crisis more and more pickers are leaving the fields to work in the gold mines. we penetrate into the mining zone in the four controlled mountains we get there by mule a two day journey with a good guide. marie c.e.o. is the president of the local small scale miners association. with it for all that used to be cocoa plantations. and the government has eradicated all the coke on the region. each day dozens of mules amble up and down these paths loaded up with cans of cyanide like mercury it's us

the largest reserves lie in the heart of the cordillera mountains where the revolutionary armed forcesof colombia the fark operate at war with the colombian government for over fifty years no one can penetrate this region without their authorisation with the help of divers go betweens we've established contact with the four guerrilla fighters they've authorized us to travel through their zone while waiting to receive us. the local economy is based on cocoa plant growing these small green leaves.