Description
The Roches de Borée are like a set of phonolitic domes exposed by erosion. Similar to the surrounding peaks (the Pialoux rock, the Gouleïou, the Touron peak), they bear witness to volcanism where the craters remain invisible.
These are typical examples of viscous lava needles that were deposited almost in a solid state. Here, no craters, but massive shapes in the landscape.
These multiple pistons are installed, like most nearby volcanoes, in a period ranging from 8 to 6 million years. Access via the car park on the village square. 1 hour hike (round trip) between the two rocks of Borée, 2 km (easy path). Follow the signs for the Montagne Ardéchoise. Interpretation table between the two rocks.
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All year round, every day.
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This maar is a superb example of phreatomagmatic volcanic activity. The operation is characterized by an intense explosive activity caused by the meeting of the hot magma during the ascent with the waters infiltrated from the surface.
Culminating at 1753 m, Mont Mézenc, the highest volcanic peak in the department, marks the divide between the Atlantic and Mediterranean waters. A phonolithic dome formed by the coalescence of several lava flows, it offers a 360° panorama.
Alpine marmots were introduced between 1980 and 1991 in the outskirts of Mont Mézenc, from the Gandoulet site. In 2011, more than 125 family groups were identified around this massif.
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| Free access. |
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