In the South-West of Karelia is a wonderful and unique lake - lake Janisjarvi. People settled on the shores of this lake in the stone age. There was always a lot of fish, and the forests that surround the lake, always lived animals on which to hunt. Later, when people began to engage in farming and construction, some of the locals lived by processing the surrounding land is very fertile, and some – at the expense of deforestation. With the advent here sawmills, many residents of the glorious lake began to live at the expense of the workpiece and floating timber. At the bottom of the lake was discovered by an unknown ore and marble, which was brought to the surface and sold. Local residents named the lake "lake breadwinner" because all their income was only from him. At that time nobody thought about when, and under what circumstances did this wonderful lake is the breadwinner.

Closely to the study of lake scientists have begun only in the twenties of the last century. Finnish scientist geologist Escola studied thoroughly the lake and all the surrounding Islands. He found on the Islands and in the center of the lake is an unusual breed. The researcher suggested that these unusual rocks are the result of a volcanic eruption that occurred about 700 million years ago.

Other researchers believe that the lake Janisjarvi was formed as a result of a meteorite and that it is nothing but a broken meteorite crater. In favor of this hypothesis say the vitreous rocks are dark green and dark grey plates, which are here in large numbers. Another circumstance evidence in favor of this hypothesis is that the lake is located in a valley depth of about 80 meters and a width of okolo kilometers. The average depth of the lake is 11, 6 meters, and the highest is 57 meters. Such options could be the result of a meteorite-asteroid. Indeed, many species found here consists of minerals that could have formed only as a result of impact of a huge meteorite on the surface of the Earth. Anyway, opinions of scientists agree on one thing: the age of the lake Janisjarvi has about seven million years!

The ancient history of this unusual lake attracts still scientists, researchers and curious tourists. However, in addition to scientific interest, the lake attracts primarily for her extraordinary beauty. Around it there are forty-three picturesque Islands. The lake itself is calm, with very clean, clear water where there are fish and other aquatic inhabitants. Avid fishermen tell us that there are roach, pike, bream, perch, whitefish, ruffe, burbot, salmon – a total of about 14 species. The lake is able to please and surprise the most demanding fisherman.

Around are rocky, rocky shores, covered with forest. Untouched nature, primeval forests, fresh air and the calm surface of the water under the deep blue sky this opens the eye when approaching the lake.

The lake has an oval shape, a bit elongated towards the North and the South. In the Western side of the lake adjacent two big Bay is Concealability and Circulati. In the South side, too, there are two bays: Almalfi and Oraviniementie. From the lake, on the South side flows the river Nishiki. due to rocky terrain, the river turned to rapids and very picturesque at the end of its journey, the river flows into lake Ladoga. But the lake itself replenishes its water reserves of 20 small streams and rivers.

Visited this place the tourists claim that it is similar to the Swiss lakes. Anyway, this is the place for everyone who is tired of city life, from the noise of civilization. Here, surrounded by stunning unspoilt nature, you can relax, gain strength, think about the greatness of nature and to understand that we are part of it, an integral part of this eternal beauty and harmony.