according to the latest observations by Tho. Bowen., Relief shown pictorially., Main Heritage Compact General, HC.MAP.01035, Print Map, Item-ID: i11402799, BIB-ID: 1172622, In English.
All laid down by actual survey with the largest an most perfect instruments now in use by his Majestys most dutiful and faithful subject and & servant James Bruce., Relief shown pictorially, Includes insets of the harbor of Rabac, Ibraim, Sebt and the island and harbor of Masuah., Prime meridian ...