Parc de Pedra Tosca, Nature reserve in Les Preses, Spain.
Parc de Pedra Tosca is a nature reserve within the Garrotxa Volcanic Zone covering around 2.5 hectares and showing distinct geological formations of volcanic stone. The land displays a network of pathways, dry stone walls, and restored stone structures set among oak trees growing from basalt lava flows.
During the 19th century, local farmers stacked volcanic stones systematically to create small plots for farming and make the hostile landscape usable. This work led to the network of paths that is still visible today.
The name refers to the rough volcanic stone that defines the landscape, a reminder of how harsh this terrain once was. Today, walking the paths between dry stone walls shows how past generations transformed difficult ground into working farmland.
The site is open daily from June through October except Mondays, while winter hours are limited to weekends and holidays. Wear proper footwear since the paths cross uneven volcanic ground and the surface is irregular.
Small stone huts tucked along the pathways once stored farming tools and now stand visible among the oak trees. These humble structures show how farmers created practical solutions even in difficult terrain.
Location: Les Preses
GPS coordinates: 42.16398,2.46097
Latest update: December 14, 2025 18:13
Vora Tosca
287 m
Museu dels Volcans
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El Carrilet d'Olot station
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Parc Nou d'Olot
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Fonts de Sant Roc
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Torre Castanys
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Jardín Botánico de Vegetación Natural Olontina (Parc Nou)
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Pont de Sant Roc
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Pavelló de bany
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Santa Maria de la Pinya
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Capella de Sant Roc
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Paratge de les Fonts de Sant Roc
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Capella de la Verge dels Desemparats
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Institut Bosc de la Coma
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Mas Verntallat
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Passeig de Sant Roc
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Can Basil
1.5 km
Masia Codella
417 m
Molí de Sant Roc
1.6 km
Font de la Gruta
1.1 km
Mas la Plana
2.1 km
Can Bolíbar
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House in avinguda de l'Estació, 11
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House in carrer Vista Alegre, 11
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Els rentadors de la Pinya
1.8 km
Mas Ca l'Expatriat
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Sitja d'Olot
1.8 km
Mas Ca la Guidet
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