Nativity scene

Traditional thresher, used in the Northeast of Portugal until the the mid-20th century for the threshing of wheat. Shaped like a sledge, it was usually pulled by a pair of animals – oxen, mules or donkeys – and its technical designation ("tribullum’) corresponds to the latin name used for it in the Roman Empire. It is made of three thick pine boards curved in the front connected by two rectangular shaped crossbars, and studded with quartzite flakes on the underside that cut the wheat and separate the grain from the straw.