Examples are disclosed herein that relate to displaying image data configured to appear behind a real-world surface. One example provides, on a computing device including a display, a method including obtaining depth data representing a real-world scene, identifying a real-world surface of the real-world scene via the depth data, obtaining volumetric image data and surface image data, the volumetric image data configured to appear as being located in a volume behind the real-world surface, receiving a user input configured to remove an area of surface image data corresponding spatially to the real-world surface, and displaying at least a portion of the volumetric image data in a region in which the area of surface image data was removed.