Not until the first decade of the 20th century, when Bergen and Oslo became linked by rail, could the two cities be reached from each other except by making an arduous trek over the Hardangervidda, Europe's largest mountain plateau. And now this unique and dramatic stretch of land which has evolved from the harsh climates experienced in this part of the world can be soaked up whilst relaxing in warm, comfortable carriages.

Across the Roof of Norway offers hours of tumbling waterfalls, green forests and edging along enough dramatic fjords to make no wonder that time and time again it is herald as one of the great train journeys of the world.