Adventure place

KOTLINA KŁODZKA UNDERGROUND: Complete Travel Guide to 600m+ Tunnel System Introduction The Kotlina Kłodzka (Kłodzko Valley) in southwestern Poland’s Lower Silesia region conceals one of Europe’s most extensive underground military tunnel systems, with over 600 meters of accessible corridors beneath the historic Kłodzko Fortress. This 18th-century defensive network represents a fascinating chapter in European military […]