Saint-Martin-de-Castillon (; oc, Sant Martin de Castilhon) is a commune in the Vaucluse
department
Department may refer to:
* Departmentalization, division of a larger organization into parts with specific responsibility
Government and military
*Department (administrative division), a geographical and administrative division within a country, ...
Calavon
The Calavon (french: le Calavon, also called ''le Coulon'') is an long river in the Alpes-de-Haute-Provence and Vaucluse ''départements'', southeastern France. Its drainage basin is .Henri-Pierre Roché (28 May 1879 – 9 April 1959), French author, is buried here.