A story about how the effort to fill gaps in an archive can also be a reparative act.

In the end of April in Santa Fe (Argentina) , time seems to stand suspended. Autumn in this part of the southern hemisphere usually brings rain, and with it, painful memories of the 2003 flood , one of the greatest avoidable socio-environmental disasters in Argentina’s recent history.

More than two decades ago, the western outskirts of the city were devastated by the Salado River , forcing more than 135,000 people—a third of the population—to leave their homes. Throughout April, those who live in these neighbourhoods travel on a kind of pilgrimage through their memories.…