*Main Pass – now called Al-Aqba Road is the only road into Aden through Crater. Originally an Arched Upper bridge known as Main Gate, it overlooked Aden city and was built during the Ottoman Empire. A painted crest of the 24th British army battalion is still visible on the brickwork adjacent to the Gate site and is believed to be the only remaining army Crest from colonial rule still visible in Aden.  In March 1963 the bridge was removed by a British Army controlled explosion to widen the 2 lane roadway to the present 4 lane highway and the only reminder of this bridge is a quarter scale replica built at the end of the Al-Aqba road intersection known as the AdenGate Model roundabout.