The Serra de Galliners is a mountain range between the municipalities of Sant Quirze del Vallès and Terrassa in the region of Vallès Occidental, with a maximum elevation of 315.8 meters. [1] It is located in the middle of the Vallès depression, divides the Vallès plain in two and delimits the Besòs (A llevant) and Llobregat (west) basins. The materials of the mountain range are identical to those of the plain, although less eroded. It is an alternation of thin and thick sedimentary materials with little cementation of the Miocene. [2] It is a biological corridor between the Coastal Range and the Prelitoral. This area is one of the last forest areas on the Vallès plain. You can still find a rich fauna that due to the human activities that take place there (motorized access, hunting, sports activities) often goes unnoticed. The typical vegetation of the mountain range is that of the Mediterranean forest, such as the holm oak grove dominated by holm oak accompanied by buckthorn and strawberry and white pine or pine groves. On the northern slope of the mountains the holm oak grove is sometimes mixed with oak with the presence of hazel and hawthorn. [3] Some of the most outstanding elevations are the hill of Can Camps (296 meters) and the hill of Mojal (312 meters), both at the end of Sant Quirze del Vallès. [2]