This fact may also help explain why tree images that clearly resemble evergreen spruces were carved into rocks in the area of Bohuslän and Østfold many centuries before that tree became a common sight there.
Seegi teadmine aitab selgitada, miks raiuti igihaljaste kuuskedega sarnanevad puukujutised Bohusläni ja Østfoldi piirkondades kaljusse juba palju sajandeid varem, kui see puu seal tavaliseks sai.