Marardalur:

Marardalur is situated in the Hengill region. This region is sitting between Road N°1 and the lake Ŝingvallavatn. Marardalur, the Valley of Horses, is a beautiful natural phenomenon surrounded by Palagonite crags on all sides with grassy plains at the bottom. In previous ages the valley was used as a cattle fold.

More pictures of Marardalur can be found on the Landsteinar Strengur hiking group: http://lost.ls.is/.

The tracks from Garmin GPS and MapSource can be found under the link below:

Track points for GPS