and extended for 37 miles between the Firth of Forth and the Firth of Clyde. The wall was overrun and abandoned soon after 160 AD, then occupied again for a brief period after 197 AD. The Forth Bridge was inscribed as a World Heritage Site on 5 July 2015. Its three iconic diamond-shaped towers form a cantilever bridge completed in 1890 carrying a dual-track railway line above the waters of the Firth of Forth north-west of Edinburgh over a distance of . Network Rail, the current owners of the bridge, made their initial opposition to a nomination clear, being concerned this could impose "additional burdens" on their ability to operate it. Nonetheless, the bridge was nominated for inclusion in early 2014. The listing recognised it as "an extraordinary and impressive milestone in bridge design and construction during the period when railways came to dominate long-distance land travel." Commenting on World Heritage Day in 2008, Linda Fabiani the then Scottish Minister for Europe, External Affairs and Culture stated: "We can... take the opportunity to reflect upon the contribution of our own World Heritage Sites and their place in the global story of humanity. We can celebrate, with justified pride, Scotland's contribution". A year later the then Culture Minister Mike Russell MSP announced at Mount Rushmore in the United States that Historic Scotland had launched a project called the Scottish Ten. This was to use laser scanners to create digital models of Scotland's five World Heritage Sites and for another five sites elsewhere, including the Mount Rushmore National Memorial. The aim is to use the digital imagery to aid in the "conservation, maintenance and management of these globally important sites". The amount of data stored will be significant. Similar work recently done on Rosslyn Chapel near Edinburgh resulted in the storage of terabytes of data, the scans being made up of 8 billion individual points. This information will be held on special secure servers and a budget of £1.5 million has been allocated to the project. Also in 2009, the Clydesdale Bank commemorated Scotland's sites on the reverses of a new series of banknotes: an image based on a historical photograph of St Kilda residents appeared on the £5 notes; of the Old and New Towns of Edinburgh on the £10 notes; of New Lanark on the £20 notes; of the Antonine Wall on the £50 notes; and of Neolithic Orkney on