Bohinj was densely settled during the Hallstatt period due to the large amounts of iron ore in the area, and a trade route linked the lake with the Soča Valley and the Adriatic Sea via a pass at Vrh Bače southeast of Bohinjska Bistrica. During the Middle Ages, when the area fell under the jurisdiction of the Bishops of Brixen at Bled, Bohinj was known for its markets and fairs, which were held near the Church of St John the Baptist. Here peasants from the Friuli region around Trieste traded salt, wine and foodstuffs with their Slovenian counterparts for iron ore, livestock and butter. As the population grew, herders went higher into the Julian Alps in search of pasture land while charcoal burners cleared the upper forests for timber to fuel the forges. Triglav was ‘conquered’ from Bohinj for the first time in the late 18th century.