Christo, The Mastaba (Project for Abu Dhabi, United Arab Emirates), 2012, drawing in two parts: 38 x 224 cm and 106.6 x 244 cm, pencil, charcoal, wax crayon, pastel, map, hand-drawn technical data, enamel paint and tape Ref #9-2012 Photo: André Grossmann Copyright: Christo 2012