• Parking fills fast, since the Collformic lot has about 20 spaces and is one of the park's busiest spots in autumn, so arrive early
• Autumn visitor point in El Brull, where park staff send you to parking and the Bus Parc service on peak autumn days
• Quieter alternatives like Arbúcies, Sant Pere de Vilamajor or the Riera de Cànoves, which the park suggests when Collformic is busy

Collformic is a mountain pass on the western side of the Montseny massif and one of the park's main trailheads. From the small parking area, the GR 5.2 climbs 3.6 km up an open ridge to the Matagalls summit cross, and a 4.1 km path heads across the Pla de la Calma plateau.

The ridge trail is steep and exposed, so it suits kids used to hill walking more than strollers.