The Brda^*, small Slovene region of western Slovenija and northeastern Italia, lying between the rivers Soča (altitude 55 m along the state border) on the east and Idrija (95 m along the state border) on the west, the hills Sabotin (609 m) on the northeast and Korada (812 m) on the north and the Friul plain (40 m) on the south.
    Bed-rock is mostly Eocene and Paleocene flysch between 38 and 55 million years old. The climate is SubMediterranean, with frequent intrusions of cold air. Brook-network is dense and full of water in the cold period of a year, but in droughts (mostly in summer) largely dry up. Surface of the Brda is characterized by prominent hills and ridges with steep slopes and narrow valleys intermediate. Flysch weathering rapidly and forms a thick sandy loam soil.
    In the natural vegetation of Brda was dominated characteristic thermophilic forest, with leading species medium-sized hop hornbeam (Ostrya carpinifolia) and south european flowering ash (Fraxinus ornans), and oaks - turkey oak (Quercus cerris), downy oak (Quercus pubescens), pedunculate oak (Quercus robur) and sessile oak (Quercus petraea) and other trees and shrubs. Forest clearing began in prehistoric times, when people started to colonize the area. After the oak trees were named villages and hamlets (Cerovo after turkey oak, Dobrovo after pedunculate oak, Gradno after sessile oak, Poddob after pedunculate oak ...).
    Natural conditions in the Brda region are very favorable for the growth of the vine, so the region has been transformed into typical viticultural landscape. Divided are in the lower and the upper Brda, the lower part of true viticultural, with intermediate orchards in sunny sides and forests in the shade sides. Bottoms of narrow valleys had been cleared in fields and meadows. In the upper Brda is less people and a little vineyards, extra income obtained by growing sweet chestnuts. In the last two decades people again enforced olives, because olive oil from border positions is the best.
    The Brda are really on the contacts and transitions from aspects of natural and social sciences. The first is the contact and the transition between the Alpine, continental and Mediterranean Europe, the second is intertwining of the Slavic and Roman world.
    With an unfairly state border allies in Paris after World War II divided the Brda into two parts. Minor belonged to the Italy, larger and more naturaly diverse to the Jugoslavija, and after its disintegration to the Slovenija.