De Geuzen is Riek Sijbring, Femke Snelting and Renee Turner. De Geuzen is a foundation for multi-visual research, together since 1996. On the second evening of Map Fest 2010, Mapping for Clarity, they presented a few of their projects, and told us about their experience with decoupling mapping and mastery. Map Fest 2010 took place at Mediamatic Bank on July 6, 8 and 9.