The article is devoted to the development of the habitation of the microregion in the vicinity of Baliuliai village and Lake Perūnas (Švenčionys District). After comparing the archaeological data, which were previously available, and the information collected during the fieldwork conducted in implementing the ‘Archaeolandscape’ project with data from an analysis of the palaeobotanical samples that were taken, an attempt was made to determine the likely intensity of the human activity in the microregion during various periods from Palaeolithic to historical times. On the basis of the archaeological and palaeoecological science data, the article presents a scheme of the microregion’s habitation.