beautiful air-raid shelter buried with historical ruins in the wilderness

abandoned airraid ancient autumn away beautiful beauty bombproof buried bygone chambers cold concealed concrete contrast crumbled decay defense earth echoes eroded fading flower forest garden haven hidden historic historical history jungle land layered leaf mystery natural nature nostalgia overgrown overgrowth plant protected protection reclaimed refuge refugee reinforced remains remnants rock ruins secret shelter sheltered shrub silent soil stone stories stream structure submerged survival thick timeworn traces trail treasure tree underground unearthed wall walls war wartime weathered wilderness witness woodland