Through the story of a mason in Djenné, Komusa Tenapo, and his family, this documentary examines an African tradition of mud architecture in Mali.  The environmental genius of these ancient construction techniques, such as walls with tiny windows that keep the interiors cool despite the stifling heat, is expressed in strikingly beautiful designs that have won the town of Djenné designation as a UNESCO World Heritage Site. Directed by Susan Vogel.