NATURE OBSERVATIONS LIESJÄRVI
Dragonfly and butterfly observations near a summer cottage since 2003
Mattilanlahti is a 17 ha large bay of Kalavesi, one of the largest lakes of Finland.
Its banks are covered with relatively high vegetation, such as Phragmitis australis.
The area is used for agriculture with several farms.
Liesjoki ends up in Mattilanlahti.