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Geology of the Gorges du Tarn

How were the Gorges du Tarn formed?

Discover the geology of the Gorges du Tarn: the Gorges du Tarn stretch for almost 53 km, from the village of Quézac to Le Rozier, at the confluence with the Jonte. This makes them the longest karstic gorges in Europe. They are bordered by the two Grands Causses: the Causse Méjean to the south and the Causse de Sauveterre to the north.

All about

the geology of the Gorges du Tarn

The Gorges du Tarn meet the Gorges de la Jonte at the village of Le Rozier. The Jonte Gorges are bounded by the Causse Méjean to the north and the Causse Noir to the south. These are carved out by the Jonte River, and offer 20 km of dazzling spectacle before the river joins the Tarn at the village of Le Rozier.

The formation of the Gorges du Tarn

It was the Pyrenean and Alpine tectonic movements of the Tertiary period that lifted the Grands Causses. Subjected to opposing forces, they gradually cracked and broke apart. As limestone is a porous, permeable rock, the Tarn and Jonte rivers were able to carve out the impressive Gorges du Tarn we can admire today. This digging began 20 million years ago! Over the millennia, wind and rain also played their part in giving them their current appearance.

Rocks of surprising shapes

Let your imagination run wild...

Rocks that seem to hang from the cliffs, majestic cirques, mysterious caves, spectacularly shaped boulders… Discover the must-see natural sites of the Gorges du Tarn!

Where to watch

the rocks

with special shapes?

Some people can see them, others can’t… you just have to let your imagination take over! Lovers, mushrooms, fairy chimneys, the face of Christ…

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