The collection includes replicas of local fossil finds, of Nipponosaurus sachalinensis and Desmostylus hesperus; taxidermied representatives of species featured in the Red Data Book of Sakhalin Oblast; materials relating to the Ainu, Nivkh, and Uilta; and one of the four main boundary markers placed in 1906 along the 50th parallel at the time of the demarcation of the Sakhalin frontier following the Treaty of Portsmouth that brought the Russo-Japanese War to its close.
