Flames rage through the pile of tires at the dump in Sesena, near Madrid, on May 13.
Ten teams of firefighters were sent to try to put out the blaze in Sesena, but it was still raging more than 12 hours after it started.
The view from the Almudena Cathedral in Madrid shows a huge smoke column caused by the tire fire.
The spectacular cloud of thick black smoke was visible for at least 20 miles.
A helicopter drops water on the tire dump.
The dump, known locally as the tire cemetery, was declared illegal in 2003 as it lacked proper permits and since then authorities have been trying to figure out what to do with it.
Black clouds of smoke float in the sky near the dump.
Authorities suspect someone intentionally started the fire before dawn at the tire dump, thought to be Europe's largest, Sesena Mayor Carlos Velazquez said in an interview on Cadena Ser radio.
Women wear protective masks as black smoke from a huge fire billows in the background in Sesena, central Spain, on May 13.
Residents in several parts of Sesena were ordered to stay indoors and shut their windows. Classes at one school were canceled and authorities urged drivers traveling nearby to keep their windows closed. Two major highways pass close to Sesena.