The book is replete with rich factual material. Barsov took the Initial Chronicle as a basis as a geographical source. He describes the world that was known to the chronicler. Considers real geographical objects from the Varangian Sea to the Black Sea basin, from the East European Plain to the Ural Range. Pays attention to the importance of rivers and seas for the residence and movement of people. The publication is intended for specialists studying the history and geography of Russia, for students of specialized universities, as well as for a wide range of readers.