Henry Salt, A voyage to Abyssinia — Appendix 2 (1814)
“ Having passed this island steer for the flag-staff of the Great Fort, keeping Pao Mountain (when it is to be seen) a sail's breadth open of the Northern Bastion, if a northerly wind prevail; and on with it, if a southerly. This mark will carry you up in a line with Casa de Balwertez, a low church at the foot of the eastern angle of the Great Fort, off which runs a reef to the N. E. about three hundred yards, steep to, and dry at low water during spring tides. ”
