1) Lake of Kangasniemi 
Kyyvesi (transl.Viper Water) is a rather large lake in the Southern Savonia region of Finland. Spite its size (129,95 km²) it`s very shallow and extremely rocky. Motorboating is recommended only for very experienced boaters as many of the rocks have not been mapped. Also, the limited amount of landing sites is a hindrance in moving swiftly throu....