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.
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