Editing Yonne (section)

==Geography==
[[File:Carte de l'Yonne.svg|thumb|300px|right|Map of Yonne]]
Yonne is a department in central France, one of the eight constituent departments of the region of Bourgogne-Franche-Comté. To the northeast lies the department of [[Aube]], to the east lies [[Côte-d'Or]], to the south lies [[Nièvre]], to the west lies [[Loiret]] and to the northwest, the department of [[Seine-et-Marne]]. The River Yonne flows northwards through the department. [[Auxerre]], the capital of the department, is situated on the River Yonne, and the [[Serein|River Serein]] joins this a few kilometres north of the city. The [[Canal de Bourgogne]], which connects the Mediterranean Sea with the Atlantic Ocean, joins the River Yonne through [[Lock (water transport)|locks]] at [[Migennes]] a little further north. The second biggest town is [[Sens]], situated at the confluence of the rivers [[Vanne (river)|Vanne]] and Yonne.<ref name=Philips>{{cite book |title=Philips' Modern School Atlas |year=1973 |publisher=George Philip and Son, Ltd. |isbn=0-540-05278-7 |page=43 }}</ref>

The geology of the department is complex with concentric rings of granite, Jurassic, Cretaceous and Tertiary rocks, and layers of sedimentary rocks. The terrain is mostly a low-lying plateau used for agriculture. The southwestern part is the [[Puisaye]], which has a higher elevation and is more wooded. To the centre and east, the land inclines to the northwest where the higher land of the Tonnerrois region lies. To the east the rock is mostly limestone. The Auxerrois region is renowned for the grapes grown here, which are used in the production of [[Chablis]] wine. To the south lies the mountainous massif of [[Morvan]], the highest parts of which are in the neighbouring department of Nièvre.<ref name=Philips/> The department has some forested areas but is mainly used for pasture or cultivated for wheat.<ref name=Baxevanis>{{cite book|author=Baxevanis, John J. |title=The Wines of Champagne, Burgundy, Eastern and Southern France|url=https://books.google.com/books?id=EczgQ7PLGVkC&pg=PA89 |year=1987|publisher=Rowman & Littlefield |isbn=978-0-8476-7534-0 |page=89}}</ref>

===Principal towns===

The most populous commune is [[Auxerre]], the prefecture. As of 2019, there are 6 communes with more than 5,000 inhabitants:<ref name=pop2019/>

{| class=wikitable
! Commune
! Population (2019)
|-
| [[Auxerre]]
| style="text-align: center;" | 34,451
|-
| [[Sens]]
| style="text-align: center;" | 26,688
|-
| [[Joigny]]
| style="text-align: center;" | 9,557
|-
| [[Migennes]]
| style="text-align: center;" | 7,258
|-
| [[Avallon]]
| style="text-align: center;" | 6,462
|-
| [[Villeneuve-sur-Yonne]]
| style="text-align: center;" | 5,165
|}