Rio flood tragedy 2011

Damaged buildings are seen after a landslide in Nova Friburgo downtown, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)

A man searchs for relatives dead at the morgue in Nova Friburgo, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)

A man searchs for relatives dead in a list at the morgue in Nova Friburgo, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)

Damaged buildings are seen after a landslide in Nova Friburgo downtown, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)

Army soldiers and volunteers unload coffins containing remains of people killed by landslides at the morgue in Nova Friburgo, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)

A worker buries coffins containing remains of people killed by landslides at the morgue in Nova Friburgo, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)

Damaged buildings are seen after a landslide in Nova Friburgo downtown, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)

Family photos are seen after a landslide in Nova Friburgo downtown, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)

Workers of a coffee house are isolated by floods in Nova Friburgo downtown, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)

Army soldiers and volunteers wait to carry coffins containing remains of people killed by landslides at the morgue in Nova Friburgo, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)

Workers bury coffins containing remains not identified of people killed by landslides at Sao Joao Baptista cemetery in Nova Friburgo, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)

A worker buries coffins containing remains not identified of people killed by landslides at Sao Joao Baptista cemetery in Nova Friburgo, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)

A man receives medical treatment at Brazilian Navy hospital in Nova Friburgo, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)

Volunteers and soldiers assist victims of landslides at a Brazilian Navy hospital in Nova Friburgo, Rio de Janeiro state, Brazil, January 15, 2011. After six days of torrential rains, mudslides have killed more than 640 people in the Rio de Janeiro area. (Austral Foto/Renzo Gostoli)