Drone photograph of Bronze Age rock art from the Bohuslän Rock Art Documentation Foundation. Most of the motifs are ships and wheels: it's about travel!
The comb-like features on the ships are the crew, which are usually just lines but are occasionally drawn in more detail.
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@mrundkvist
Why just lines? Is it simply that rock is a really annoying material to add details on?
@tobychev Most rock art artists probably had no idea why, because this artistic convention was established already in the 1600s BC and survived for 1200 years. Modern archaeologists don't know either.
#archaeology