Malansac Park of Prehistory

Slate mining began around 1878 and finished around 1911. The largest quarry called "Guenfol" or "Blue Lake" had an above ground surface area of 3,500m2. 18 to 20 million slates were extracted per year by nearly 300 labourers. The site was then transformed and today known as "Park de Préhistoire" (Prehistoric Park).