Growing pains in Collserola

Land that means a breath of fresh air for large numbers of Catalan urbanites is also proving to be the source of a hefty bureaucratic challenge for the municipalities that border the Parc de Collserola, Barcelona's largest park. The 8,467 hectare (nearly 21,000 acres) green space abuts Barcelona and eight other municipalities including Sant Cugat de Vallès and Cerdanyola de Vallès. (Full story in printed edition).