The Heidenloch (“Heathen Hole”) is a 55-meter-deep stone-lined shaft, three to four meters across, cut into the summit of Heidelberg’s Heiligenberg a few meters west of the observation tower on the road to the hilltop (source: [Wikipedia](https://de.wikipedia.org/wiki/Heidenloch_(Heidelberg))). Its depth and disputed origins draw history enthusiasts and photographers up the forested hill above Handschuhsheim.
Most historians link the shaft to the medieval monasteries on the Heiligenberg and believe it was probably dug as a well. Local legend describes it as a pagan ritual site or a secret tunnel, and the theories continue to circulate (source: [Mystic Trails](https://mystictrails.net/places/heidenloch-heidelberg/)). Visitors cannot descend into the shaft. A metal grate seals the opening, so the experience consists of peering down the dark, masonry-lined cylinder and dropping a glance into its cool depths. Bring a flashlight for better views and photos.
Visitor Highlights & Practical Info
The site is outdoors, free, and open at all hours. Weekday mornings are the quietest times to visit. Weekends from spring through autumn bring hikers and families.
The classic approach is on foot. From the Old Bridge, climb the Schlangenweg to the Philosophenweg, then continue uphill through the woods. The walk takes about an hour.
Combine your visit with these nearby sites on the summit:
- The observation tower
- The ruins of St. Michael’s and St. Stephen’s monasteries
- The 1930s Thingstätte amphitheater
Paths are uneven and muddy after rain, so wear sturdy shoes.
