The Belgian sculptor Berlinde De Bruyckere delves into the elemental, working with waxed animal skins, hair, and wood to create haunting works that touch upon monumental themes. In 2000, she exhibited five life-size casts of dead horses, which were placed in Flanders Fields, in Ypres, a site of epic bloodshed during the First World War. This exhibition in Bonn presents 34 sculptures and 10 new works on paper. Mortality and metamorphosis—De Bruyckere sees them as one state. —Elena Clavarino