The Infanteriebunker Alvier V A6053 Lmg is a Swiss military bunker located in the canton of St. Gallen, near the village of Unterwasser. Built as part of Switzerland's extensive network of fortifications during the Cold War era, this infantry bunker was designed to house troops and provide defensive capabilities in the mountainous Alpine region.
The designation 'Alvier' refers to the nearby Alvier mountain range, while 'A6053' indicates its classification within the Swiss fortification system. These bunkers formed part of Switzerland's National Redoubt strategy, a comprehensive defensive plan developed to protect the country in the event of invasion.