Frank Richardson Cana, 1911 Encyclopædia Britannica (1911)
“ Cape Guardafui is in 11° 75′ N., 51° 26′ 32′′ E., and forms, as it were, the tip of the Horn of Africa. The cape, which faces north and east, presents on its northern face a nearly vertical wall of rock rising from the sea to a height of 900 ft. The water is deep right to the base of the cliff and owing to the winds and the strength of the ocean currents, navigation is dangerous. The headland is known to the Somali as Girdif or Yardaf—whence in all probability comes the European form Guardafui. ”
