![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/97/Sejny_-_Marycha.jpg/220px-Sejny_-_Marycha.jpg)
The Marycha is an 80 km long river in the border triangle Poland in the voivodeship Podlaskie (63 km), Lithuania and Belarusbelonging to the river system of the Memel belongs. It is very popular with canoeists, anglers and other water sports enthusiasts.
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The Marycha flows through numerous lakes of the Suwałki Lake District in the jungle of Augustów east of Masuriabefore going into the Czarna Hańcza flows out. In its lower reaches it forms the Polish-Lithuanian and the Lithuanian-Belarusian border, and flows directly through the triangle. On the Augustów Canal is she with the Rospuda, NiceBiebrza, Narew and Vistula connected to the west. The river network can be navigated with a houseboat. If you want to cross the border into Belarus, you may need a visa.