In a country that loves tunnels, Kalsoy is the grandfather of them all, with this one little island having fivetunnels (four on the road between Syðradalur and Trollanes, and one as a branching side tunnel off the northermost tunnel).



As you drive through the tunnels one at a time, each time you emerge into a different valley.

Here's one valley with a nice view of Kunoy:



The next valley has the nice little village of Mikladalur (I'll swing back to that later)



And you finally emerge from the last tunnel and descend down the switchbacks to the little town of Trøllanes: