Esther Polak Delen Facebook Twitter LinkedIn Pinterest Email The artist duo Esther Polak and Ivar van Bekkum together with Bert Kommerij use sand to create temporary interactive artworks by mapping locations with sand circles. Esther speaks about Sandmapping at Ignite Amsterdam 24. During Ignite Amsterdam 24 Met: Esther Polak Waar is dit gemaakt? Ignite Amsterdam 24