Stock photography, photos: Man, Time, Space Stock photos of Man on a threshold Photograph: © Carol & Mike Werner Click for a larger image and more information Keywords associated with this stock photo: Man, Male, Human, Nude, Naked, Reflections, Threshold, Portal, Doorway, Door, Entrance, Future, Futuristic, Vision, Time, Clock, Space, Geometric, Computer-generated, Computer graphic, CG, CGI, 3-D, Abstract, Fantasy, Landscape, Imagination, Dream, Dreamscape, Unreal, Transparent, Sky, Blue, Concept