Natural Frame

Photograph something where there is framing within the photo. It does not have to be fully framed on all sides but the frame must be part of what you photographed. I am not asking for post processed borders or frames. Examples: Photograph through a tunnel, an archway, under some tree branches, through a hole in a wall, through a hole in a seashell, looking out a door as long as the doorway is the frame or find something else that naturally frames your subject.