It is barely light as 37406 The Saltire Society approaches County March Summit near Tyndrum Upper on 5 March 2005 with the 1Y11 04:50 Edinburgh (ex Euston) to Fort William ScotRail sleeper. Some of idea of how dark it is can be gauged from the fact that the reflections on the side of two centre coaches are from car headlights on the road just behind where I am stood!