Mountain principality between France & Spain
The Pyrenees form a high wall between France and Spain that has ... between 
the two countries, though the tiny autonomous principality of... [DOC] [TLE] espaces-transfrontaliers.org: Border: France-Spain-Andorra [PAR] The border between France, Spain and Andorra, formed by the Pyrenees, ... and 
Andorra (around 100 people commuting to the Principality from France in 2007).