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Puy-de-Dôme is a large lava dome and one of the youngest volcanoes in the Chaîne des Puys region of Massif Central in south-central France. This chain of volcanoes including numerous basaltic and trachytic cinder cones, trachytic lava domes, and maars is located far from the edge of any tectonic plate.
Puy-de-Dôme is located approximately 10 km away from Clermont-Ferrand. At 1464 meters Puy-de-Dome is the highest of the Monts Dome range of puys. Construction of the present-day Chaîne des Puys began about 70 000 years before present and was largely completed by the beginning of the Holocene. Holocene eruptions constructed lava domes such as the Puy de Dôme, whose growth was accompanied by pyroclastic flows, cinder cones that fed lengthy lava flows, and maars. The latest well-documented activity took place about 6000 years before present near Besse-en-Chandesse and included the powerful explosions that formed the Lac Pavin maar. (from Global Volcanism Program)
In pre-Christian Europe, Puy-de-Dôme served as an assembly place for spiritual ceremonies. Temples were built at the summit, including a Gallo-Roman temple dedicated to the God Mercury, the ruins of which were discovered in 1873.
In 1648, Florin Périer, at the urging of Blaise Pascal, proved Evangelista Torricelli's theory that barometric observations were caused by the weight of air by measuring the height of a column of mercury at three elevations on Puy-de-Dôme. In 1875, a physics laboratory was built at the summit. Since 1956, a TDF (Télédiffusion de France) antenna is also located there.

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Additional Photos by Ecmel Erlat (ecmel) Gold Star Critiquer/Gold Note Writer [C: 127 W: 0 N: 234] (1686)
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