Defileul Jiului

The Jiu leaves the coalfield of the Petroșani basin and has to get through the Southern Carpathians to reach the plain. What it has cut is a corridor about thirty kilometres long between the Vâlcan mountains on one side and the Parâng on the other, and in December 2005 the government declared 11,127 hectares of it a national park — the last one Romania has created. The relief inside the boundary runs from 295 metres at Bumbești-Jiu to 1,621 at the Vâlcan pass, more than thirteen hundred metres of it, and better than eighty-five per cent of the ground is forest, mostly beech and oak. Two named rock formations stand out of it, the Sfinxul Lainicilor and the Stâncile Rafailă, and both are reserves in their own right.

Because a gorge is a gate, the history here is all about getting through. Three Roman forts sit at Bumbești-Jiu guarding the southern mouth. Halfway up, the Lainici monastery keeps a record of what passing armies do: the stone church was built by Gorj boyars between 1812 and 1817, Tudor Vladimirescu hid there in a monk's habit after the war of 1806–12 and the Turks beheaded the abbot Maxim for failing to produce him, and in 1916 German troops rode horses into the church, burned the sixteen linear metres of archive and took the bells. The abbot Irodion Ionescu, who ran the place from 1854 to 1900, was canonised in 2009. That same autumn of 1916 the gorge was the German axis into Wallachia and the First Battle of the Jiu was fought at its mouth on 10 October; four days later Ecaterina Teodoroiu, then twenty-two, fought with a scratch force of civilians and scouts at the Jiu bridge, was captured on the 18th, shot her guard and escaped. She died at Mărășești the following year as Romania's first woman officer.

The railway is the gorge's real monument and its history is routinely misreported. The Bumbești–Livezeni line runs thirty-one kilometres through thirty-nine tunnels and over twenty-seven viaducts and eight bridges — nearly eight kilometres of tunnel in all. It was authorised in 1923, built between 1924 and 1931, abandoned for six years, and resumed under the wartime programme from 1937 to 1941. What the communist state did was finish it: the national labour site opened on 1 April 1948, drew 27,988 brigadieri from across the country, ran the first locomotive through on 22 October and inaugurated the line on the 31st, then made a feature film about itself, Răsună Valea, in 1950. The workforce was youth-brigade labour recruited more or less voluntarily, not penal labour, and the engineering was largely done before the regime existed — which was rather the point of the propaganda.

What's worth knowing before you go

Bumbești-Jiu is the gateway at the southern end and Petroșani closes the northern one; the DN66/E79 runs the whole length, half an hour from Târgu Jiu to Lainici. But the right way to see this park is from the train, on the line through the tunnels, which is how the gorge was designed to be looked at.

It is low, forested and warm-temperate, so it is open year-round in practice and October is the beech season. The seasonal variable is not snow but roadworks: the DN66 is wedged between vertical rock and the river, and rockfall-net maintenance closes lanes or stops traffic outright for stretches at a time — there were alternating one-lane restrictions between Bumbești-Jiu and Polatiște from 21 July 2026. Check before committing to a timetable. Note also that the park is not settled law on the ground: a hydropower scheme on twenty kilometres of the river has had its building permits definitively annulled by the Bucharest Court of Appeal, its environmental agreement found to have been issued by an authority without competence, and a government decision of 2022 explicitly prohibits hydropower inside the park — and construction has continued regardless.