Aerial footage of a sailing boat travelling between the Forth bridges at South Queensferry on a sunny day in West Lothian, Scotland

aerial footage from the air forth rail bridge rail sailing sailing boat railway bridge scotland forth water landmark sea travel transportation architecture steel queensferry firth river road engineering crossing iron building famous south cantilever scottish firth of forth construction north structure aerial estuary historic historical suspension infrastructure forth bridge forth road bridge traffic elevated cantilever bridge icon iconic metal queensferry crossing aerial view