The chalk deposits beneath Chełm date back to the Upper Cretaceous period, approximately 70-100 million years ago.
The tunnels were created by individual homeowners who mined chalk directly beneath their properties to sell it for construction and whitewashing.
The network represents the only known underground chalk mine of this type in Europe.
Despite the high humidity, the chalk walls act as a natural air filter and regulator, keeping the tunnels structurally stable for centuries.
Archaeological findings within the tunnels include medieval household items and remnants of historical heating systems.
The deepest sections of the labyrinth reach up to 15 meters below the street level of the Old Town.
Podziemia Kredowe w Chełmie is a unique historical underground labyrinth carved entirely into a chalk deposit beneath the city center. Spanning approximately 2 kilometers across three levels, the tunnels originated from centuries of medieval chalk extraction by local residents. The site features stable natural temperatures year-round, typically hovering around 9 degrees Celsius. Visitors follow a guided 500-meter route through excavated galleries and chambers that reveal the geological structure of the region. The tunnels served various historical functions, including food storage, cellar space, and wartime shelter. A resident legend involves the 'Bieluch' ghost, a friendly spirit said to guard the underground chalk halls. The attraction is managed by the local museum authority and requires mandatory guided access to ensure safety within the chalk tunnels.
The main cavern featuring the illuminated sculptures and the area near the 'Bieluch' ghost display.
Bring a warm jacket or sweater regardless of the season, as the constant subterranean temperature is chilly.
Wear closed-toe, comfortable walking shoes with good grip, as the path can be uneven and slightly damp.
Book your guided tour in advance, as group sizes are strictly limited for preservation and safety reasons.
Do not attempt to explore the tunnels without an official guide, as many sections are structurally unsafe or restricted.
Open year-round; guided tours are mandatory and may have reduced frequency on certain public holidays.
Maintain a quiet volume as sound carries in the narrow passages; do not touch the walls to preserve the soft chalk surface.
