at Antony and downstream has been envisaged. In 2003 this was done to Fresnes at the Pars des Prés on the edge of the La Fontaine district of Antony. Antony is bisected by the South Parisian Green corridor which forms a portion of the via Turonensis: one of four paths in France for the pilgrimage to Saint Jacques de Compostela. Geology and terrain The commune area is with the altitude varying between . The plateaux of Beauce ends in the north in an area crossed by small tributaries of the Seine. Antony is located in the extreme north-east of this area, called Hurepoix. The crust of limestone of Beauce ends with a ledge at the edge of the Bois de Verrières. It covers a thick impermeable layer about thick of sand mixed with marl from Fontainebleau which is itself resting on layers of green marl in which there are some areas of gypsum then finally blue marl forming the bottom of the Bièvre valley. These green and blue marls form a completely waterproof layer about thick. These set the date of these layers to the Tertiary period when the sea occupying the centre of the Paris Basin began to retreat. The old village of Antony is located on the green marl at the edge of the outcrop of the water table. It was in the gypsum layer that, in Antony in 1807, Georges Cuvier discovered the fossils of an extinct animal, one of the first to be scientifically recognized - in 1796 Cuvier had been one of first to argue species could become extinct. Naming it Anoplotherium commune, he described a mammalian ungulate herbivore with a long tail and the stature of a donkey or horse that lived 30 million years ago in the Late Eocene to the earliest Oligocene. Climate Antony climate type is of degraded oceanic. The most commonly used meteorological observation stations for Antony are those at Orly and at the airport of Vélizy-Villacoublay, both being communes located near Antony. The climate in the departments of the inner suburbs of Paris is characterized by sunshine and relatively low rainfall. The following table compares the climate of the city of Antony with that of some large French cities: The issue of flooding in some districts of Antony and Fresnes, following clogging of water networks (i.e. stormwater, wastewater and the Bièvre) during violent storms (1982, 2001, 2008) returns periodically