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- Marks of the Floor Surface of the Old Cathedral
- Atrium Wall of the Old Cathedral
- Excavation of the Gothic Cathedral
- Baptismal
- Burials in the Entrance Hall of the Old Cathedral
- View into the North Axis of the Old Cathedral
- Floor in the Entrance Hall of the Old Cathedral
- Arch Foundation
- Arch Foundation
- Semi-Circular Passage like on the Plan of St. Gall
- Entrance into a Crypt from the Baroque Period
- Emundus Grave
- Foundation of the Western Apse, Old Cathedral
- Foundation of the Old Cathedral
- Foundation of a Pillar
- Section of Foundation, Gothic South Tower
- Foundations of the Choir Pillars, Gothic Cathedral
- Foundations of the Gothic Pillars
- Foundation Walls of Entrance Hall, Old Cathedral
- Heating System, Roman House under the Cathedral
- Cobbled Construction Street, Gothic Period
- Bell-Founding Pit
- Gothic Pillar Foundation
- Gothic Pillar Foundation
- Gothic Pillar Foundation
- Gothic Pillar Foundation
- Gothic Pillar Foundation
- Walls of the Crypt of the Old Cathedral
- Medieval Burials
- Modern Cement Ceiling
- Reconstruction of the Boy's and the Women's Grave
- Remains of the Old Cathedral
- Threshold of the Old Cathedral
- Late Antique Construction
- Late Roman Well, Merovingian Rests, Old Cathedral
- Baptismal Font from the Cologne Baptistery
- Divisional Wall between the Old and New Cathedral
- Tower Foundation of the Old Cathedral
- Filling Layers of Bell-Founding Pit
- Wall of a Roman House (Earliest Buildings)
- Gate of the Gothic Construction Site with Hinges
- Water Drain of a Roman Street
- Western End of the Old Cathedral
- Western Foundation of the Old Cathedral
Foundation walls of the entrance hall, old cathedral
The foundations pictured here formed the southern and western walls of the entrance area at the north-western end of the old cathedral. Construction material that was found during the excavations can be seen on the foundation wall. In the background, a small ladder leans against the western wall. Just above it is the old threshold of the cathedral. It leads into the large western atrium. The foundations of the threshold are reinforced by a recycled, trapezoid gravestone dating from the late Merovingian period.