Here's a few pics from a hike in Botnsdalur, a valley that's typically not on the tourist check-list because it's not a big deal -- but it still makes for a nice little Sunday afternoon walk.
When you drive north from Reykjavik towards the West Fjords or Akureyri, you need to take a tunnel below Hvalfjordur. In the good old days (which is about 30 years ago I think) you had to add one hour to your journey because you had to go all the way around the fjord. For this hike, that's exactly what you do still; the trail starts at the furthest point, moving east.
And so without further comment, here's a couple of views from along the way.