The Sentinel (also called Hangberg) is the dramatic peak marking the western lip of Hout Bay's entrance, rising almost vertically from the sea to around 330 metres. It forms the other half of the bay's dramatic headland frame, paired with the mountains to the east to create the enclosed valley that gives Hout Bay its character.
The Sentinel can be hiked via a trail that starts near Hout Bay harbour — it is a strenuous climb that rewards with views back across the bay, down the Kommetjie coast, and out to Duiker Island. The trail is well-maintained but steep, and the summit ridge is exposed to wind. Allow two to three hours return. The path also passes through fynbos vegetation, and spring wildflowers (August–October) are good.