The book Rock Carvings in the Borderlands, published in cooperation with the Swedish National Heritage Board, says: “The images of trees in rock carvings illustrate that as early as the Bronze Age the southern Scandinavian region was part of a larger religious and cultural context that covered the whole of Europe and large parts of Asia.
Buku Rock Carvings in the Borderlands, yang diterbitkan atas kerja sama dengan Dewan Warisan Nasional Swedia, mengatakan, ” Bentuk - bentuk pohon dalam pahatan batu menunjukkan bahwa kawasan Skandinavia bagian selatan sudah memiliki kaitan agama dan budaya dengan seluruh Eropa dan sebagian besar Asia sejak Zaman Perunggu.