Bus de la Lum

Bus de la Lum is a sinkhole on the Cansiglio plateau featuring a vertical shaft descending approximately 180 meters straight down. The opening leads into an underground space with a simple, direct path and no branching corridors or side passages.

The sinkhole served as a burial site during World War II between 1943 and 1945, when it became a place of tragic significance. This period left a lasting mark on local memory and the site retains its historical weight today.

The name derives from the light that filters into the opening at certain times, creating notable visual effects within the shaft. Local stories speak of supernatural beings connected to such places, shaping how people view this natural feature.

When planning a visit, pay attention to weather conditions as rain can make access difficult and the surrounding ground unstable. The best time to explore is during drier periods when conditions are safest for movement around the opening.

At 80 meters depth, the shaft connects to the Pozzo dei Bellunesi cavity system, creating an extensive underground network beneath the plateau. Researchers suspect hidden underground channels link this cave system to distant springs at the plateau's base.