Analysis of a petroglyph discovered by retired geologist Ingvar Lindahl at Efjorden in the Nordland county of Norway has estimated the petroglyph, which depicts a boat, to be between 10,000 and 11,000 years old.
     Jan Magne Gjerde, an archaeologist at Tromso University, says: "The boat is a little over four metres long. You can see the keel line and the railing line, and as you move forward you can see a really beautiful finish, forming the boat's bows."
     The petroglyph was dated using estimates of the height of the water level against the rock on which it is carved. Water levels in the region were higher during the Stone Age than they are today.
     The petroglyph is possibly the oldest in the world depicting a boat.

Edited from The Local (27 September 2017)