Credits:
https://commons.wikimedia.org/wiki/File:Old_putcher_rank_on_Portland_Grounds_-_geograph.org.uk_-_936832.jpg
https://vidiq.com/wonderworld

7,000 year old fish traps
The rods were used for fish traps. In fact, this is one of the oldest creels we know of in Norway and the oldest of its kind that we know of in Northern Europe.