Petrohan Pass is a mountain pass in the Balkan Mountains (Stara Planina) in Bulgaria. It connects Sofia and Montana. The pass is part of Pan-European Corridor IV. As the pass represents the shortest route between Sofia and north-western Bulgaria (and from there Romania, especially since the opening of the) Vidin-Calafat bridge the expansion of the narrow road passing through the pass has been suggested, including by the construction of a tunnel.
- 21 – 24 SEPTEMBER 2017 - PAN-BALKAN PEOPLE'S ASSEMBLY PETROHAN - 21/09/2017 - 24/09/2017 - All Day