Gonçalo Barriga worked at the Neves-Corvo Mine as a mine geologist between 1996 and 2010 before embarking on a career in photography.

These photos were taken over a period of nine months in 2009 and offer an insider’s view of a world known first-hand only to a very small number of people, for whom the mine is almost a second home.

Contrast is everywhere: light and darkness, the smallness of men against the immense machines and their jovial spirit against a hostile environment.