Departing from Fort William to Mallaig this 84 mile round trip takes you past a list of impressive extremes including the 21-arched Glenfinnan viaduct (a location made famous in the Harry Potter films).

Described as the greatest railway journey in the world! Starting near the highest mountain in Britain, Ben Nevis, it visits Britain's most westerly mainland railway station, Arisaig; passes close by the deepest freshwater loch in Britain, Loch Morar and the shortest river in Britain, River Morar, finally arriving next to the deepest seawater loch in Europe, Loch Nevis!