By Clare Sebastian, Anna Chernova, CNN
(CNN) — For the third time in 12 days, the Russian Black Sea town of Tuapse woke up Tuesday to apocalyptic scenes.
Thick toxic fumes, and flames rising up from the latest Ukrainian drone attack on the Rosneft-owned Tuapse oil refinery, almost reached the heights of the surrounding Caucasus mountains.
By Thursday morning, authorities said the fire had been extinguished. Fires from the two previous attacks, on April 16 and 20, also took days to put out, with toxic substances pouring down in black rain and blanketing cars and streets in oily grime, leading to what experts are dubbing the worst environmental disaster in the region in years.
“The city is choking on smoke,” one resident said on social media.
Located around 70 miles northwest of Sochi, which hosted the 2014 Winter Olympics, Tuapse is part of the subtropical resort area along the Black Sea coast, once known as the “Russian Riviera” thanks to its popularity among Russians as a summer holiday destination. The town’s refinery, attached to a marine terminal, is a key oil-processing and export hub for Russia, and has been repeatedly targeted by Ukraine in recent months.
“Oil is literally falling from the sky. We can’t breathe. The entire city reeks of fuel oil, dripping onto cars,” Elmira Ayrapetyan, an entrepreneur who runs a branding agency in nearby Krasnodar and came to Tuapse to help with the clean-up, told CNN.
Volunteers have come together here partly because it took almost two weeks – and three attacks in quick succession – for regional and federal authorities to react.
On Tuesday, the Kremlin acknowledged the situation for the first time, and President Vladimir Putin dispatched his emergencies minister Aleksandr Kurenkov to the scene to coordinate the fire response. “The situation is not easy, but it’s controllable,” the minister said.
The governor of the Krasnodar region had used the same wording earlier that day as he surveyed the damage, flames and smoke still billowing into the streets.
‘Real environmental catastrophe’
Putin used the disaster as an opportunity to repeat well-worn accusations against Ukraine of carrying out “terrorist attacks” against Russian civilians and energy infrastructure.
In a late-night security meeting Tuesday, he said that strikes on Tuapse “could potentially cause serious environmental consequences” but added that “it seems there are no serious threats; people are dealing with the challenges they face on the spot.”
Environmental experts take a somewhat different view.
“It’s a real environmental catastrophe, regional in scale at a minimum. There hasn’t been anything like this for several years,” ecologist and opposition political activist Yevgeny Vitishko told CNN in an interview conducted before Tuesday’s attack.
Satellite images and social media video verified by CNN show the oil has spilled into the Tuapse river and the sea, with parts of Russia’s southern Black Sea coast still blackened by fuel oil, though part of the main beach in Tuapse appeared to have been cleaned by Tuesday.
CNN analysis of satellite imagery from Sunday, before the latest attack, shows traces of oil have spread at least 50 kilometers (31 miles) from the shore. Russia’s emergencies minister announced Tuesday that barriers would be placed “soon” to prevent “potential leaks into the sea.”