On the GR 221. The long distance path over the Serra de Tramuntana, also called dry stone route, in West-Mallorca, Spain Stock Photo - Alamy
GR221 Mallorca -dry stone route | Hiking Experience
Trekking in mallorca (International Trekking) [Idioma Inglés]: GR221 - The Drystone Route through the Serra de Tramuntana : Paddy Dillon: Amazon.es: Libros
From a recent hike on the GR221: fotografía de GR 221- Dry Stone Route, Mallorca - Tripadvisor