Once upon a time, in what is now Chełm, a white bear lived in a cave beneath three oak trees. When people built a pagan temple with an eternal fire by the oaks, the bear hid underground. It comes up to the surface only when the people of Chełm face great danger. However, anyone who wishes can hear and see Bieluch by touring the Chełm Chalk Tunnels with an audio guide.Chełm was built entirely on… chalk, a white sedimentary rock. From the Middle Ages onwards, the town's inhabitants mined this material and sold it. They worked so intensively that the ground beneath Chełm now resembles Swiss cheese full of holes. The Chełm Chalk Tunnels are a tourist route under the town centre. To explore them, it is worth using the audio guide, which will not let you get lost underground, will tell you the most interesting stories and will even take you to meet the ghost Bieluch.