Fjadrárgljúfur is a canyon located in the south of Iceland, near the ring road between Skaftafell and Hvítárvatn. It is approximately 100 meters deep and 2 kilometers long, making it one of the largest canyons in Iceland.

The canyon was formed by the relentless forces of water and erosion over thousands of years. The Fjadrá river runs through the canyon and creates breathtaking waterfalls, the most famous of which is the Stuðlafoss waterfall. Visitors can hike along the river, taking in the unique geological formations, crystal-clear water, and stunning views.

One of the most iconic features of Fjadrárgljúfur is its distinctive shape, with tall and narrow walls that tower over visitors. These walls are made of basalt columns, which are a common feature in Iceland and are created by the rapid cooling of volcanic lava.