Mezhgorshchina is rightly considered the most picturesque corner of Transcarpathia. It attracts travelers with forested mountains, cloudy meadows, fast-flowing rivers Tereblya and Chernaya Reka and healing mineral water springs such as Burkug.

But it has long been considered that the most valuable and most important treasure of the intermountain area is Synevyr Lake ("Morskoe Oko") at an altitude of 989 meters above sea level. Lake Synevyr was formed in the post-glacial period, about 10 thousand years ago, as a result of the overlapping of the river valley by shifts. The depression was filled with water from three mountain streams. The size and depth of Lake Synevyr varies depending on the amount of precipitation. The average area of ​​Lake Synevyr is 4-5 hectares, the depth is 8-10 meters. The deepest point is 22 m. Lake, rainbow and brook trout feel good in clear cold water. And around the "Sea Eye" there are slender fir trees, whose age reaches 140-160 years. The water of the lake is cold even in summer - 10-19 degrees.
Lake Synevyr is one of the visiting cards of the Ukrainian Carpathians. There is a legend according to which the picturesque lake was formed from the stream of tears of the count's daughter Xin, at the place where her beloved, the simple Verkhovinsky shepherd Vir, was killed with a stone block on the orders of the vile count.

According to legend, Xin wept so bitterly that she flooded the entire valley with her. So Lake Synevyr appeared.

There is a hole in the bottom of Synevyr, which serves as a kind of natural water level regulator, and thanks to this, the lake does not overflow its banks even during the biggest floods.

People also tried to complement the beauty of nature - the architects successfully fit the viewing platforms into the surrounding landscape. And on the peninsula there is a 13-meter-high sculptural composition “Sin and Vir” carved from mahogany.