Which Icelandic waterfall is famous for a wide curtain that visitors can walk behind?

Seljalandsfoss is the Icelandic waterfall famous for a wide curtain that visitors can walk behind.

The waterfall is on the Seljalandsá River in southern Iceland, where water drops from former sea cliffs. The river originates beneath the Eyjafjallajökull ice cap, linking the waterfall to Iceland’s glacial and volcanic landscape. A recessed rock ledge behind the falling water forms the distinctive passage.

A footpath traditionally allows visitors to walk behind the cascade, although access can close when conditions are slippery or unsafe. The viewpoint is especially recognizable in photographs because the falling sheet frames the landscape from inside the cliff hollow.

Seljalandsfoss is often confused with nearby Skógafoss, another major south-coast waterfall. Skógafoss is a broad, front-facing rectangular plunge, while Seljalandsfoss is known for its cave-like rear viewpoint.