On the American military maps marked objects called “cabin”. It’s a fishing hut on Russian — tonyá (with an accent on a last syllable).
The tonya is a shelter and temporary home for a fisherman and usually has a cellar and icehouse. The tonyas can be found on the coast of the White and Barents seas and on the bank of the river. Some of them are used despite its solid age.
Some of them are abandoned and looking like on the photo: