The GR 221 is the ‘Ruta de pedra en sec’, as much of the route takes advantage of the old cobbled paths (which communicated the villages and the estates on the Serra) and also because the most emblematic landscape is the rows of olive trees on terraces with dry-stone walls. The GR (173 km) will cross the Serra de Tramuntana from the Port d’Andratx (in the south of the island) to Pollença (in the north) and some buildings have been restored as mountain hostels.