Tornionjoki is a river located in northern Finland and Sweden. It flows for about 100 kilometers, starting from the Torneträsk lake in Sweden and emptying into the Gulf of Bothnia. The river serves as a natural border between the two countries and is known for its rich biodiversity, including various fish species. The river is significant for local communities, particularly for fishing and recreation. It is also a popular spot for white-water rafting and kayaking. The surrounding areas are characterized by beautiful landscapes, making Tornionjoki a destination for nature enthusiasts and tourists alike.