Sognefjord extends eastwards over 100 miles from the open sea. There is some magnificent scenery, especially in Aurlandsfjord and Nærofjord. A trip on the railway from Flåm to Myrdal (1000m above sea level) is worth doing - depending on your energy levels you can rent mountain bikes to ride the 20km back down, run, walk, or take the train. There is also an accessible glacier at Jostedal. However, it requires many hours sailing to reach these places, so if your trip is only a week and diving is the sole purpose, don't venture too far up Sognefjord.