Trail of els bunkers de Sant Llorenç de la Muga Curiosity · Sant Llorenç de la Muga, Alt Empordà, Girona Image of Sant Llorenç de la Muga, not of the place itself. A trail passing several concrete fortifications of the Line P, built after the war to face a possible attack from France and today half swallowed by the forest. Photo: Cèsar August Torras i Ferreri (Public domain) What to see and do in Sant Llorenç de la Muga