Colonnade of basalt prisms or giant's causeway near the extinct volcano Chenavari Peak, Vivarais/Ardeche range. After a design by Veyrenc in Barthelemy Faujas de Saint-Fond's Recherches sur les volcans eteints, 1778. Pave des Geans de Chenavari dans le Vivarais. Copperplate engraving by Giuseppe Dall'Acqua from Scipion Breislaks Traite sur la Structure Exterieure du Globe, Treatise on the Exterior Structure of the Globe, Jean-Pierre Giegler, Milan, 1822.
Colonnade of basalt prisms or giant's causeway near the extinct volcano Chenavari Peak, Vivarais/Ardeche range. After a design by Veyrenc in Barthelemy Faujas de Saint-Fond's Recherches sur les volcans eteints, 1778. Pave des Geans de Chenavari dans le Vivarais. Copperplate engraving by Giuseppe Dall'Acqua from Scipion Breislaks Traite sur la Structure Exterieure du Globe, Treatise on the Exterior Structure of the Globe, Jean-Pierre Giegler, Milan, 1822.