Bob Dylan faces the ire of ecologists, unions and local residents because of a concert he is due to perform tonight in a park in the Spanish countryside.

Ten thousand fans are expected to descend on the park for the concert, which is being promoted by local authorities in Castilla y León under the title Musicians in Nature - a reference to its backdrop of lush woods and mountains.

But critics claim that the concert-goers could damage the parkland surrounding Mesegosillo de Hoyos del Espino, an estate in the Sierra de Gredos, a mountainous park near Avila to the west of Madrid.

Carlos Bravo, of the ecology association Centaurea, said: "They have taken no measures to preserve the area despite the large infrastructure that they are building."

He described putting on concerts of this type as an "atrocity".

"What [the government] is doing is supporting projects which put in clear danger the natural heritage and culture of this community."

Other organisations protesting against the concert include a local branch of a major union, residents' groups and Ecologists in Action.

Dylan is performing with the Spanish group Amaral as part of the Spanish leg of his European tour.

Eduardo Damerco, the promoter of Dylan's Spanish tour, said: "I don't know what the situation is with regards to the area. This is a matter for those who are organising the concert. I don't know what Dylan thinks of this, either."

José Manuel Jiménez Blázquez, environmental spokeswoman for Castilla y León regional government, said that concert-goers would have to leave their cars outside the park and walk to the venue. Buses would also ferry in concert workers. He said €10 (£7.90) from each ticket would be donated to conservation schemes in the park.

Sting faced the wrath of environmental activists when he planned to play in the same parkland in 2006. After talks with protesters, the Police singer, a well-known eco-campaigner, asked organisers to change the venue and instead performed outside the Sierra de Gredos.