Seljalandsfoss is the Icelandic waterfall famous for a path that passes behind its falling curtain of water. The waterfall drops from a former sea cliff, leaving a recessed hollow behind the stream.
It is fed by the Seljalandsá River, whose water originates beneath the Eyjafjallajökull ice cap. The falls are especially distinctive because visitors can view the landscape through the water from the rear, although conditions can be wet and slippery.
Seljalandsfoss is often confused with nearby Skógafoss, another major waterfall on Iceland’s south coast. Skógafoss has a broad, nearly straight drop, while Seljalandsfoss is known for its cave-like space and walkable rear view.