
German and Peruvian archeologists work at the circular 5,500-year-old sunken ceremonial plaza, built of stones and adobe, part of the Sechin Bajo archaeological complex in Casma, Andes foothills, 330 kilometers (206 miles) northwest of Lima, Feb. 2008. The archeologists say the plaza is the oldest known monument in Peru. (AP Photo/ El Comercio)
AP

A forensic anthropologist takes a saliva sample of Teofila Ochoa Lizarbe, (R) a relative of people who disappeared during Peru's dirty war, to be used for a DNA comparison with remains recently discovered in graves in Ayacucho, in Lima, February 25, 2008. Families of people who disappeared during Peru's dirty war gave DNA samples this week to scientists hoping to find matches with remains recently discovered in graves in Ayacucho, a department in central Peru. Nearly 70,000 people died or disappeared in Peru between 1980-2000, in a brutal war between the military, police, the Shining Path guerrilla group and the Tupac Amuru Revolutionary Movement. REUTERS/Mariana Bazo(PERU)
Reuters

A forensic anthropologist explains to relatives of people who disappeared during Peru's dirty war, the steps to taking saliva samples to be used for a DNA comparison with remains recently discovered in graves in Ayacucho, in Lima, February 25, 2008. Families of people who disappeared during Peru's dirty war gave DNA samples this week to scientists hoping to find matches with remains recently discovered in graves in Ayacucho, a department in central Peru. Nearly 70,000 people died or disappeared in Peru between 1980-2000, in a brutal war between the military, police, the Shining Path guerrilla group and the Tupac Amuru Revolutionary Movement. REUTERS/Mariana Bazo(PERU)
Reuters

A forensic anthropologist explains to Teofila Ochoa Lizarbe (L), a relative of people who disappeared during Peru's dirty war, the steps to taking saliva samples to be used for a DNA comparison with remains recently discovered in graves in Ayacucho, in Lima, February 25, 2008. Families of people who disappeared during Peru's dirty war gave DNA samples this week to scientists hoping to find matches with remains recently discovered in graves in Ayacucho, a department in central Peru. Nearly 70,000 people died or disappeared in Peru between 1980-2000, in a brutal war between the military, police, the Shining Path guerrilla group and the Tupac Amuru Revolutionary Movement. REUTERS/Mariana Bazo (PERU)
Reuters

A forensic anthropologist takes saliva samples of Cirila Pulido Baldeon (R), a relative of people who disappeared during Peru's dirty war, to be used for a DNA comparison with remains recently discovered in graves in Ayacucho, in Lima, February 25, 2008. Families of people who disappeared during Peru's dirty war gave DNA samples this week to scientists hoping to find matches with remains recently discovered in graves in Ayacucho, a department in central Peru. Nearly 70,000 people died or disappeared in Peru between 1980-2000, in a brutal war between the military, police, the Shining Path guerrilla group and the Tupac Amuru Revolutionary Movement. REUTERS/Mariana Bazo(PERU)
Reuters

A forensic anthropologist takes saliva samples of Cirila Pulido Baldeon (C), a relative of people who disappeared during Peru's dirty war, to be used for a DNA comparison with remains recently discovered in graves in Ayacucho, in Lima, February 25, 2008. Families of people who disappeared during Peru's dirty war gave DNA samples this week to scientists hoping to find matches with remains recently discovered in graves in Ayacucho, a department in central Peru. Nearly 70,000 people died or disappeared in Peru between 1980-2000, in a brutal war between the military, police, the Shining Path guerilla group and the Tupac Amuru Revolutionary Movement. REUTERS/Mariana Bazo(PERU)
Reuters

A forensic anthropologist take saliva samples of Hermenegildo Parez De La Cruz, a relative of people who disappeared during Peru's dirty war, to be used for a DNA comparison with remains recently discovered in graves in Ayacucho, in Lima, February 25, 2008. Families of people who disappeared during Peru's dirty war gave DNA samples this week to scientists hoping to find matches with remains recently discovered in graves in Ayacucho, a department in central Peru. Nearly 70,000 people died or disappeared in Peru between 1980-2000, in a brutal war between the military, police, the Shining Path guerilla group and the Tupac Amuru Revolutionary Movement. REUTERS/Mariana Bazo(PERU)
Reuters

A forensic anthropologist takes saliva samples of Cirila Pulido Baldeon, a relative of people who disappeared during Peru's dirty war, to be used for a DNA comparison with remains recently discovered in graves in Ayacucho, in Lima, February 25, 2008. Families of people who disappeared during Peru's dirty war gave DNA samples this week to scientists hoping to find matches with remains recently discovered in graves in Ayacucho, a department in central Peru. Nearly 70,000 people died or disappeared in Peru between 1980-2000, in a brutal war between the military, police, the Shining Path guerilla group and the Tupac Amuru Revolutionary Movement. REUTERS/Mariana Bazo(PERU)
Reuters

A view of the ruins of Sechin Bajo, that was built 5,500 years ago, after it was discovered in Casma in this February 2008 file photo. Archeologists involved in the dig said on Monday carbon dating shows it is one of the oldest structures ever found in the Americas. A team of Peruvian and German archeologists uncovered the plaza, which was hidden beneath another piece of architecture at the ruins known as Sechin Bajo, in Casma, 229 miles (370 km) north of Lima, the capital. REUTERS/El Comercio (PERU)
Reuters

Peru's former President Alberto Fujimori attends his trial in a courtroom at the Special Police Headquarters in Lima February 25, 2008. REUTERS/Justice Palace/Handout (PERU). FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS..
Reuters