The Antrea Net is the oldest known fishing net in the world, dated 9310±120 BP or in calendar years 8300 BC with radiocarbon dating. It was found by a farmer named Antti Virolainen in Antrea, Finland (today Kamennogorsk, Russia) in autumn 1913, while he was ditching a swamp meadow. The place was then excavated by the Finnish archaeologist Sakari Pälsi. The net is made out of willow and it is 27–30 metres long by 1.3-1.5 metres wide, with a 6 cm mesh. The net is estimated to have weighed about 30 kilograms when wet. The Antrea Net is on display in the National Museum of Finland.