Where in France does petrol cost almost €US 10 a gallon?

French Guiana is the answer, where demonstrations over the cost of fuel have all but cut it off from the rest of the world for the past week.

Flights in and out of the international airport in Cayenne have been disrupted, ports have been blockaded, schools closed and businesses in the department have come to a virtual standstill.

Yet even in this country (let alone abroad) the demonstrations have had relatively little national media coverage.

The reason it hasn't really been making the headlines even here in France?

Well that's probably because it's actually happening thousands of kilometres away from mainland France in one of this country's far flung overseas departments - Guyane or Guyane française (French Guiana) on the northern coast of South America, bordering Brazil and Suriname.

That's right, South America.

France extends that far (and further if you want to head towards the Indian Ocean and the island of La Réunion) because Guyane is part of the French Republic - albeit a distant one.

It's an overseas department with the Euro as its currency (yes logically as it's part of France, it's also part of the European Union), elected representatives to the French parliament in Paris (National Assembly and Senate) and as in the rest of France its own regional or local government.

To get there you would have to take a nine hour 'plane journey from the French capital.

But short and to the point, in principle it's as much a part of France as the regions of Alsace, Provence or Champagne.

Fuel in Guyane started rising dramatically long before the oil price hike (and subsequent drop) worldwide earlier this year.

It currently stands at €1,77 a liter for lead-free (the equivalent of around $US 10 a gallon).

In fact the increase in fuel at the petrol pumps there dates back to February 2007, when regional authorities decided to adjust the price to European norms, rather than the one that had been in operation beforehand.

Last Friday, Yves Jégo, the minister of overseas departments, said that the state would be willing to stump up €5 million to help the local government reduce the price by 30 centimes a litre. Over the weekend he increased that to €10 million for 2009.

As far as Jégo is concerned, it's now up to the regional government in Guyane to find a solution and drop the price of petrol at the pumps.

He says that although the French state is responsible for administering the price of fuel in its overseas departments, it's the regional government (or local authority) that sets the tax rate on fuel.

"The state doesn't get anything from the tax on fuel for its territories and departments overseas," he said on Sunday evening's prime time news.

"It's the region of Guyane which benefits from the tax, and so it's up to the local government to make the effort to drop the price by another 20 centimes, he added.

"It's up to the local elected officials to take responsibility."

The offer wasn't enough for demonstrators though, who remained adamant that they would hold out for drop of 50 centimes a litre.

And they have the backing of their local politicians from all parties, who on Sunday sent a letter to the French president, Nicolas Sarkozy, asking for the government "to take all possible measures to meet the request of the people of Guyane."