This article will discuss an artistic research project exploring a repressed part of Swedish colonial history by unboxing and unfolding a hidden trove of photographs and films amassed by Swedish Missionaries in Congo. The transdisciplinary and transnational research project explores how material traces of Swedish colonial history can support contemporary discourses, processes, and practices of recovery from the colonial period's devaluation of indigenous knowledge systems. By developing a participatory practice based on artistic research methods, the project contributes new perspectives on critical re-examinations and future knowledge in artistic research.