³⁴Bergh, Stefan. Landscape of the Monuments: A Study of the Passage Tombs in the Cuil Irra Region. Riksantikvarieämbetet, 1995. 19-21.
Bergh writes (p. 385): "...this linear architecture forms the access path that connects the outer world to the central space of the tumulus. While walking through (or along) the whole tomb, the visitor crosses, both symbolically and gradually, the delimitations that subdivide the tumulus into several concentric spheres or rings. The tomb is actually the only way to penetrate into these parallel spaces and to reach the centre of the tumulus."