Isollaz Waterfall

Isollaz Waterfall (Cascata di Isollaz) in Challand-Saint-Victor is one of the most impressive waterfalls in the Aosta Valley. The Évançon stream, fed by the glaciers of the Monte Rosa massif, channels through narrow rock walls and drops approximately 50 metres near the hamlet of Targnod.

Where the water comes from

The Évançon originates from two streams – Verra and Cortaud – both fed by Monte Rosa glaciers. Descending into the valley, the river presses between increasingly steep rock faces until it reaches Targnod, where it plunges into the gorge below in a single 50-metre drop.

The Sache mines

The area around the waterfall carries a layer of history: it is connected to the ancient Sache mines. On the left side of the falling water, one of the entrances to this former mining deposit is still visible, adding an unexpected historical dimension to what is already a striking natural site.

Getting there

The path begins on the municipal road connecting the village of Isollaz to the last hairpin bend before Targnod. The walk to the waterfall takes about 20 minutes. The site is known for its acoustic force – the roar and air displacement from the falling water are felt before the cascade itself comes into view.

FAQ

How long is the walk? About 20 minutes from the roadside starting point.

Is it worth a dedicated visit? Yes – it is considered one of the most beautiful waterfalls in the entire Aosta Valley, both for its power and the drama of the narrow gorge.

What else is nearby? The entrance to the historic Sache mines is visible at the waterfall itself. The surrounding Monte Rosa area offers extensive summer hiking.