Khachin is the largest island on Lake Seliger.
The area is more than 3 thousand hectares. From north to south, its length is about 9 km. From west to east 6 km.
The island is inhabited by bears, moose, wild boars, badgers, foxes, raccoons, rabbits, muskrat, beavers. Of waterfowl birds, it is necessary to note a bittern, a rather rare bird, which has chosen itself for nesting the coast of the island.
The administrative center of the village of Volokhovshchina, the villages of Salnikovshchina, Laskarevschina, Konevo and Hretien became country townships and are populated only in the summer. The island is territorially part of the Ostashkovsky district of the Tver region.
The island is divided into two parts by an artificial canal - Kopanka, which the monks dug out to cut the waterway and for a safe voyage between Nikolo-Rozhk and the Nile Desert.