In 1996, the bricklayer renovating Merced dos Anjos’ home in Rio de Janeiro told her something strange had happened. Bones appeared as he was breaking ground. As she inspected the site, she found they were human. But why so many bones? Was it the work of a serial killer?

The answer was more macabre. They had unearthed an ancient cemetery. The discovery shed light on the brutal history of Brazil’s slavery past – and Rio’s role as the biggest slavery port in the Americas.

The neighbouring Valongo Wharf, today a World Heritage Site, received roughly one million African captives by 1831. Many were too weak after the transatlantic crossing and died soon after arriving. They were buried in the so-called New Blacks Cemetery.

Merced dos Anjos tells Julia Carneiro how the discovery upended her life and led her to create a research centre to shed light on Rio's painful past.

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(Photo: Merced Guimarães dos Anjos. Credit: Julia Dias Carneiro)

Uncovering a lost burial ground in Rio

Witness History

Uncovering a lost burial ground in Rio