Subterranea Britannica is a society dedicated to the exploration and research of underground structures, including nuclear bunkers. We focus on man-made underground locations such as air raid shelters, tunnels, catacombs, cellars, mines, and railway tunnels. Our interests also extend to historical sites like fortifications, crypts, grottos, and ice houses. We study a diverse range of underground structures, from military works and communication centers to reservoirs and silos. Our aim is to
