Seventy‑two metres below a restricted Kočevje forest lies Škrilj Bunker: 600 metres of tunnels and six reinforced chambers, each fitted with its own water source and twin generators. Built at the height of the Cold War, this top‑secret shelter was designed to keep a hundred people alive for one hundred days after a nuclear strike. Only recently declassified, the complex now opens its steel doors to guided groups, while the forest above remains closed military ground. Descend into the silent heart of a world that braced for the unthinkable.