'I get to work on the most scenic railway line in the world' John Giles/PA The Settle-Carlisle line is celebrating 150 years having survived a threat of closure in the 1980s Have you heard the one about the railway line that was threatened with closure, so lots of people started using it and it was saved? Welcome to the Settle to Carlisle line, the quirky steel road through some of Britain's most magnificent countryside. The line starts in Leeds and passes through Shipley and Skipton, but it is the section between North Yorkshire and Cumbria that is world-famous for its views. Heading north from Settle, the peak of Pen-y-Ghent soon looms large, with Whernside and Ingleborough following a few miles later. Nick Wooley/BBC The line was voted the second most famous in the world last year Karen Morley-Chesworth from the Settle-Carlisle Railway Development Company said the route was "the best of British countryside".…