Patch of grass, Vincent van Gogh

Hidden van gogh painting under his painting grasgrond (1887; today in kröller-müller museum). Made visible with a synchrotron x-ray beam ("infrared reflectography" technology doris) at the deutsches elektronen-synchrotron (desy) in hamburg, germany. Size of portrait ca. 17. 5 × 17. 5 cm. Object Type: painting. Date: in or before 1887: maybe 1884-85 in Nuenen, in the south of the Netherlands. Place of creation: Paris. Dimensions: height: 300 mm (11.8 in) ; width: 390 mm (15.3 in). Medium: oil on canvas. Collection: Kröller-Müller Museum. Van Gogh portrait under Grasgrond