These are typical examples of viscous lava needles that have moved into place almost in a solid state. Here no craters but massive shapes in the landscape. Interpretation table between the two rocks.
Description
These multiple pistons are installed, like most nearby volcanoes, in a period ranging from 8 to 6 million years. Access by the car park on the village square. 1 hour hike (round trip) between the two rocks of Borée, 2 km (easy trail). Follow the signs for the Montagne Ardéchoise.
Opening
All year.
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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.
Prices
| Free access. |
Location