You left Bergen at 08:08. Between here and Oslo the line climbs from sea level to 1,222 metres, crosses about 100 km of ground above the treeline, and drops back down a river valley to the fjord. This page follows you the whole way — it knows where you are and tells you what's outside.
When it opened it was called Norway's greatest engineering feat of the century, and it cost roughly a full year of the national budget. Much of what you'll pass through was cut by hand — the rallar, itinerant navvies who lived on the mountain year-round with dynamite, sledgehammers and horses.