Southernmost point – unnamed location on the border with Liberia immediately south of the village of Gonon, Nzérékoré Region. Westernmost point – Ile du Noufrage, Boké Region. Westernmost point (mainland) – the point at which the border with Guinea-Bissau enters the Rio Compony estuary. *Note: Guinea does not have a northernmost point, this section of the border being formed by a straight latitudinal line