Haifoss is, with its 128 meters, one of the highest waterfalls in Iceland. Next to Haifoss there’s another waterfall called Grannifoss. Both waterfalls are part of a phenomenal landscape and were one of the most impressive waterfalls we’ve seen on our route. You can drive to the top of the waterfall and enjoy the views from above, and if you like to you can hike to the bottom of the waterfalls as well. 
Haifoss is located in the highlands and accessible by a gravel road. Luckily this road is not classified as an F-road so you are allowed to drive here with any kind of vehicle. Considering the condition of the road, we were a little surprised that it's not an F-road. We recommend you to drive carefully, adjust your speed and mind the potholes. The advantage of the bad road is that very few people make the effort to get there, which ensures that you can explore this majestic place without crowds. 

Note: We heard you can also walk to the waterfalls, starting from an old farm called Stöng. So you don’t have to drive the gravel road but it would take you a very long time to reach the waterfalls. 