Video: Anca Slum Sessions #8 Share Facebook Twitter LinkedIn Pinterest E-mail A group of designers and do'ers gather in the Mediamatic Fabriek to discuss the future of the Freezing Favela during Slum Sessions #8. By: Anca All rights reserved With: Willem Velthoven, Derk Peter, Laurens Hebly, A group of designers and do'ers gather in the Mediamatic Fabriek to discuss the future of the Freezing Favela during Slum Sessions #8. With: Willem Velthoven, Derk Peter, Laurens Hebly