Clermont-Ferrand's cathedral is built entirely from black lava stone
The Cathédrale Notre-Dame-de-l'Assomption isn't just any old example of Gothic architecture. It screams gothic in striking, volcanic black. Situated in Clermont-Ferrand in France's Auvergne region, It is built entirely from black Volvic lava stone, a volcanic trachyandesite quarried from nearby sources. — Read the rest
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