Tire dump holds between five and six million tires.

A massive tire fire has erupted 20 miles south of the Spanish capital of Madrid.

The fire started at approximately 2 a.m. this morning in the town of Seseña.  The fire broke out at the country's largest tire dump which covers approximately 25 acres and holds between five and six million tires.

There's no word on what started the blaze but the director of finance and public administration for Castilla-La Mancha said it looks like the fire was "intentionally set." Nothing is official at this point but it has rained in the region for the past few days which would make a naturally-occurring fire seem doubtful.

No injuries have been reported as a result of the blaze but local authorities have closed schools and urged residents with respiratory problems to stay indoors.

The massive blaze is still burning out of control but authorities have dispatched approximately 40 firefighters to the site.  They are being assisted by two helicopters and two firefighting aircraft.

Despite this, authorities have said the tire dump is a difficult area for firefighters to operate in.  However, conditions are favorable as most the smoke seems to be rising straight up and dispersing rather than moving towards nearby population centers.

Source: The Wall Street Journal