In the lower reaches of the Indigirka River on the coast of the
Arctic Ocean, almost 400 years ago, people founded Russkoe
Ustie. They came from the Russian North – Veliky Novgorod
and Pskov, they learned local crafts: to fish, hunt animals and
birds. They strictly kept their customs, language, spoke the
medieval speech until the middle of the 20th century. The
permafrost became their promised land.
https://unikino.ru/mmkf_44/