From Roknäs village, Piteå Parish
This long barn is from the 1790s and was built for threshing* with a threshing trolley pulled back and forth by horses. A long barn could be over 40 metres long. The drawback of the long barn was that the horse had to be unhitched and re-hitched again every time it reached the end of the threshing track.
This type of long barn became common in Norrbotten in the mid-18th century, when more effective methods eliminated the hard work of threshing with flails.
*Threshing involves separating the core of the grain from the chaff, the casing that surrounds it.