Basalt flow, natural heritage in Thueyts in Ardèche

Opening : All year round.

The Giant’s Causeway is a basalt flow from the Strombolian volcano of Gravenne de Thueyts. It reaches more than 50 m thick and 80 m high, so it is one of the most imposing of the Young Volcanoes of Ardèche and one of the highest in Europe.

You are not dreaming, it is not only in Ireland that the Giants have marked the valleys!

How to discover the Giant’s Causeway? We advise you to follow one of the hiking routes from the character village of Thueyts to the Pont du diable:

• The devil’s bridge and the king’s ladder
• The Devil’s Bridge, the Fargebelle Valley and its Queen’s Ladder 

In Thueyts in Ardèche, the Giant’s Causeway is a unique natural place that inspired nature sports lovers! Every year takes place the trail of the Giant’s Causeway which offers all year a permanent marking on 3 courses.

The course of the Gravenne (10km), discover its course here
The Ranc Qualiou course (20km), discover its course here
The course of the 3 valleys (51km) – between the municipalities of Thueyts, Mayres and Jaujac, discover its course here