Puy de Dôme (French pronunciation: ​[pɥi də dom]; Occitan: Puèi Domat, Puèi de Doma) 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 cinder cones, lava domes, and maars is far from the edge of any tectonic plate. Puy de Dôme is approximately 10 kilometres (6 mi) from Clermont-Ferrand. The Puy-de-Dôme département (with hyphens) is named after the volcano.

History

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.

Puy-de-Dôme (French pronunciation: ​[pɥi də dom]; lo Puèi de Doma / lo Puèi Domat in the Auvergnat dialect of the Occitan language) is a department in the centre of France named after the famous dormant volcano, the Puy de Dôme.

Inhabitants were called Puydedomois until December 2005. With effect from Spring 2006, in response to a letter writing campaign, the name used for the inhabitants was changed by the departmental General Council to Puydômois, and this is the name that has since then been used in all official documents and publications.

History

Puy-de-Dôme is one of the original 83 departments created during the French Revolution on 4 March 1790. It was created from part of the former province of Auvergne. Originally, the department was to be called Mont-d'Or ("Golden Mountain"), but this was changed to Puy-de-Dôme following the intervention of Jean-François Gaultier de Biauzat, a local deputy, because of a concern that the name originally chosen risked attracting excessive unwelcome attention from the national taxation authorities.