A tunnel for Ranuska
Around the end of the Ranuska peninsula, the track passes under a mountain and skirts quite close to the coastline. When the engineers were building the track, they had to dig through a lot of loose rock, and had problems with the hillside above. Since the tunnel was so close to the surface, the engineers built up a brick and concrete lining where the tunnel broke through. The resulting tunnel has become something of an icon for the area.
So here is the area where my tunnel will go, with the sanatorium perched above. It is so close to the edge that a tunnel would just look silly, but I want a tunnel. While surfing for ideas I came across the Cinque Terre in Italy, which is a rugged patch of coast line along the Italian Riviera. I found some great looking stone structures that were half tunnel, half rock shelters, so I decided to copy that.