Hiitolanjoki is a 53 kilometres long river. 8 kilometres of the river streams in Rautjärvi in South Karelia and 45 kilometres in Hiitola in Russia. Water of the river comes from Simpelejärvi (Simpele Lake) and water flows to Laatokka Lake in Russia. There are 12 rapids in the river. Formerly Hiitolanjoki has been a waterway, a source of fishes, a transport channel and lastly a source of power for hydroelectric plant. All four rapids on Finland's side of the border, Juvankoski, Ritakoski, Lahnanen and Kangaskoski, are dammed up to produce electricity. The river area is interesting attraction to visit, whether you are fisher, hiker or for example interested in cultural history.