Ghitis Moises Rivera, director of the museum in Ceibo on the island of Ometepe in southern Nicaragua reported that heavy rains recently uncovered the remains of an indigenous cemetery dating back about 4,500 years. The discovery included five human skeletons, bone fragments and pieces of pottery 'from 2,500  to 2,800 BCE.' Valuable pre-Colombian artefacts had previously been found on the island so local authorities asked police to protect the site from grave robbers until the arrival of more archaeologists.
     Ometepe was settled by the Choroteca and Nahuatel people, who migrated to Central America from northern Mexico. It is a volcanic island located in the lake of Cocibolca and was added to Unesco's World Network of Biosphere Reserves on Wednesday.

Source: IOL Science (8 June 2010)