The areas of southern Peru worst affected by the earthquake have been reduced to rubble.
Many have been left homeless, while the fear created by aftershocks is keeping many more outside.
Food and water is short, so aid deliveries often result in chaotic scenes.
The government has urged people to remain calm, saying no-one will die of thirst or hunger.
People have been searching for their relatives among the hundreds of bodies that have now been recovered.
With few survivors now being found, most searches for relatives end in grief.
Burying the dead has become a priority for many people.
Amid the tragedy, a new life was welcomed into the world by Peru's President Alan Garcia as he toured the earthquake zone.