Dry toilet on last meters of your way to Hveradalir and/or Kerlingarfjöll.
How to find Parking lot with toilets by Kerlingarfjöll:
500 meters before the road F347 ends for good in the middle of Iceland.
GPS coordinates of Parking lot with toilets by Kerlingarfjöll: 64.646550, -19.276558 Take me there!