Nasion

nasion \ˈnā-zē-ˌän\ noun: the intersection of the frontal and two nasal bones of the human skull, visible on the surface of the face as a distinctly depressed area directly between the eyes and just superior to the bridge of the nose

Etymology: Latin nasus nose, sense of smell

The nasion is a depression and the inion is a projection. Could the two fit together like puzzle pieces? Only one way to find out. (Make sure your volunteer is a friend.)