Meaning is invisible, but the invisible is not contradictory of the visible, the visible itself has an invisible inner framework, and the in-visible is the secret counterpart of the visible, it appears only within it … every effort to see it there makes it disappear, but it is in the line of the visible, it is its virtual focus, it is inscribed with in it (in filigree.)
- Maurice Merleau-Ponty, in Working Notes, circa 1961, published 1968
Despite an ambiguous tension in experiencing petroglyph images in places, the visible and the invisible are not in opposition. A third presence implied, invited - one of spirit. So it is with petroglyphs in Canyon de Chelly in northeast Arizona.