Kálfafellsdalur is a long glacier valley located south east of Vatnajökull. Valley is scared with streams collectively called Miðvötn or Landkvísl and at the very end of the valley you can find steep glacier tongue called Brókarjökull (Breaches glacier). This is another place, where you can not find any signs and is rather difficult to hike in. However it´s a perfect place to disconnect from the outer world and marvel the ''beautiful nothingness'' of Icelandic nature.
Valley is easily spotted from the ring road. Entrance is located near Kálfafellsstaður farm and it´s possible to drive inside the valley until Kaldá river. To venture further, there is no other way but to cross the river. I´ve not tried to do it with a car, and I would not recommend it, unless you have a monster truck.
From there you can venture further inside the valley. Landscape changes rapidly, from rock covered sands with steep mountain slopes, to green meadows, full of birds and grazing reindeer.
End of the valley splits into two, with glacier tongues at the end of each. Brókarjökull is a very steep glacier tongue that divides around the rock Brók. On the west side glacier forms lagoon. Nearby you can also find number of kettles - shallow ponds formed by retreating glacier. On the east side you can find a small valley called Vatnsdalur. There glacier literally hangs of the mountain. It´s a thrilling, yet a scary feeling to stand close to it.
It takes pretty much the whole day to explore the valley and it´s a demanding hike. But if you are looking for that feeling of peaceful desolation, it´s a perfect place to be in.