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. Some have transformed them into social activism and express them in public demonstrations; others seek to heal them collectively through intergenerational ceremonies; and there are also those who revisit their memories in silence, in the privacy of their homes, in the company of their families or in the presence of their absences.…