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By Georgia Grimond, Contributing Reporter

RIO DE JANEIRO, BRAZIL – Signs of human habitation and clues to Rio’s history have been uncovered by archaeologists working on the city’s new metro line, Line 4, in Leopoldina, Centro. Approximately fifty stone artefacts and 400 shells dating back between 3,000 and 4,000 years have been discovered.

They are thought to be from the period when the paleo-Indians lived and moved around Guanabara Bay, leading nomadic or semi-nomadic lives as fisherman and hunters-gatherers.

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