F35 was the only highland road we took. we traveled from Blönduós to Hveravellir and back.
On this approximate 168km long road we saw only one man-made building. (see the first photo). This day too was cloudy and rainy and most of lakes and mountains en-route were covered in thick fog.
Hveravellir was geothermal area with hot spring pool. i so was tempted to take a dip but then we had to drive back to Blönduós on same day and the weather was too cold.