This place is hard to believe is in Iceland It is a horseshoe shaped canyon with beautiful nature and hikes inside.
There are a few different hikes that differ in length and difficulty so I suggest stopping into the visitors center and asking the rangers what is the best hike for your time here.
There are also many camping facilities and is a beautiful place to stay.
My photos do not currently do this place justice. If you have a drone this is a great place to fly!