The first stage gave birth to a 44 sq.km large paleo-volcano
whose only remains nowadays cover 5 % of the isle (3 sq.km) with
"Le Fernand" (731 m), "Le Grand Balcon" (the
upper balcony - 616 m) and "Le Pignon" (the gable -
The second stage produced the neovolcano "La Dives"
and some lava- flows out of the caldeira. Some of them may be
several kilometres long, the largest of all being the 600 m wide
"Plateau des Tourbieres" (peat-bog plateau); some others
created lava-tunnels too. Scoria-cones appeared at the end of
the volcanic activity; the recentest of them (photo) dates back
to the previous century.