Columnar basalt mass at Lake Bolsena, central Italy. Geologist Giambattista Brocchi and artist Bertoletti studying the hexagonal and pentagonal prisms. Located between Bolsena and Montefiascone. Amas colonnaire basaltique de Bolsene. Copperplate engraving by Milanese painter Gaetano Riboldi after Bertoletti from Scipion Breislak’s Traite sur la Structure Exterieure du Globe, Treatise on the Exterior Structure of the Globe, Jean-Pierre Giegler, Milan, 1822.

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Size: 7248px × 4863px
Photo credit: © Florilegius / Alamy / Afripics
License: Licensed
Model Released: No

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