r/abandoned•6 mo. agoRecent-Macaron2676These forgotten tunnels stretch for miles... What where they used for?https://preview.redd.it/fqweo0z3u8tg1.png?width=1280&format=png&auto=webp&s=ec7c82efde562c31dbce1e9b97e78efbde3a844bPosted Apr 6, 2026, 1:03 AM UTC03ShareSave