Parc de la Serralada Litoral, Nature reserve in Sant Fost de Campsentelles, Spain.

The Parc de la Serralada Litoral protects 7,400 hectares at the northern end of the Serralada de Marina, in the province of Barcelona. It comprises three units: la Conreria, the Sant Mateu massif and the Céllecs massif, whose highest point reaches 534 metres. Its granite terrain, weathered into rounded slopes, boulders and sandy sauló, is covered mainly with Aleppo and stone pines, with holm oak stands in less altered spots.

This protected area was created to shield the land from growing urban expansion in the metropolitan region. Its establishment was a direct response to increasing development pressures that threatened the natural spaces in this densely settled area.

The park's name comes from the Serralada Litoral range, and it is officially known in Catalan as Parc de la Serralada Litoral. Its three units are La Conreria, the Sant Mateu massif and the Céllecs massif. Cork oaks survive on the seaward slope, remnants of former cork harvesting, and water mines still supply some surrounding towns.

The park has marked hiking paths that connect different areas, making it easy to navigate and explore at your own pace. Information centers offer maps and guidance to help you find your way and choose routes that match your interests.

The park's granite weathers into sauló, a coarse golden sand that rainwater carries down paths and streams to the sea, where it helps build the beaches of the Maresme. Walkers notice the rounded boulders and balanced stones left on the slopes.