Abstract
The study deals with the prehistoric development of the Bezděz – Doksy region in Northern Bohemia, with special regard to the excavation of the La Tène settlement at Okna that is cautiously ascribed to the Kobyly group. The settlement is assessed according to the data obtained by palaeobotanic, geobotanic and sedimentologic research of the site as well as the whole studied region which is largely comprised of boreal forest.
Its possible use in prehistory and the reasons of late colonization of agricultural lands in its immediate vicinity, which occurs only in late La Tène period and subsequently in the Middle Ages, are discussed. Survey of the alluvial plain of the Robečský brook revealed two erosion events which may be results of deforestation and establishment of fields, first during the existence of the La Tène settlement and the last probably upon foundation of the medieval village of Okna.