This darkly picturesque canyon, carved out by the river Fjaðrá, has been well and truly discovered, thanks to Instagrammers and one Justin Bieber (who filmed a video clip here). A walking trail follows its southern edge for a couple of kilometres, with plenty of places to gaze down into its rocky, writhing depths, and to take in the gorge's gorgeousness and the emerald-green surrounds.
The canyon is not far west of Klaustur, 3km north of the Ring Road via Rte 206.