Sein arpentée is a audio-visual portrait which traces a pedestrian, and the landscape of the island of Sein. The island, where the sea is visible from every vantage point, is situated at the extreme west of Bretagne, France. Each one of the main extremities of the island offers a 360º panorama and 4 cardinal points that allow the viewer to position him/herself permanently in relationship to North and to the island. The last shot, of the lighthouse lantern at sunset, reveals the narrowness and the contours and the jutting points of Sein which were surveyed since sunrise.