Medium Galdane was one of the most dangerous sections of the King's Road. The narrow valley leaves room for only the river and the road, squeezed between steep rocky terrain. In winter and spring, avalanches and rockfall made it treacherous. The road was eventually abandoned in the 1840s for a safer route over Seltunåsen, though that one was destroyed by a flood in 1860.
Today it's an idyllic summer walk. The first thing you'll encounter is Olavsklemma - according to legend, King Olav the Sacred rode through here in 1023 to convert the people of Valdres to Christianity, but the pass was too narrow. He supposedly made his horse press against the mountain to widen it. In reality, it's an old gorge carved by the river over thousands of years.
Further along is Laukebergbakken, immortalised in a painting by Johannes Flintoe showing a merchant desperately trying to hold back his horse on the steep descent. The original hangs in the National Gallery in Oslo.
You can also see German fortifications from World War II - the occupiers understood controlling this route was essential.