Wasserlochklamm, Palfau, Canyon with karst spring in Styria, Austria.

Wasserlochklamm is a limestone gorge near Palfau with an underground spring and multiple waterfalls. The path uses wooden stairs and narrow walkways along steep rock walls, passing five separate cascades as you move through.

The gorge was opened up by a wooden stairway; the Wasserlochbach drops 350 metres over 900 metres through it in five large waterfalls on its way to the Salza. On 24 August 2024 a visitor reported a fire on the upper edge of the rock wall; it covered 5,000 square metres and 100 metres of elevation, the gorge path was closed and five helicopters were used on 24 and 25 August.

The name refers to the water hole spring flowing through the gorge, which has shaped how locals perceive this landscape. Visitors notice how the water emerges from the limestone and defines the entire walking route.

The gorge is reached from the Hochschwab Straße B 24 in the Schönau part of Landl, where a guesthouse and the ticket hut stand, via a suspension bridge and a short climb downstream along the Salza. The wooden stairway covers 350 m of height over 900 m of length, so allow time for the ascent and descent. The path was closed after the forest fire of 24 August 2024, which burned 5000 m² on the upper rock face; check whether the climb has reopened before setting out.

Water does not come from above like typical waterfalls but instead emerges directly from the rock face and feeds all the cascades from within. This underground spring system changes its flow volume by season, completely shifting the canyon's character.