P Line Bunker near Madrid

A military bunker located near Madrid, Spain, part of the extensive P Line defensive network constructed during World War II. The P Line, also known as Linea P, was built along the Pyrenees to defend Spain's northern border against potential Allied invasion. This network of fortifications represents Spain's strategic response to the geopolitical tensions of the 1940s, when the country, still recovering from the Spanish Civil War, sought to protect its neutrality through extensive military preparations.