article_snippet: Mr Spalding draws parallels with the 1868 discovery of magnificent prehistoric ceiling paintings in the Altamira Cave in Spain, by a geologist and archaeologist. '
article_snippet: Experts at the time denounced the 1868 discovery of magnificent prehistoric ceiling paintings in the Altamira Cave in Spain, by a geologist and archaeologist as forgeries.
article_snippet: It was not until the end of the 19th century that the 1868 discovery of magnificent prehistoric ceiling paintings in the Altamira Cave in Spain, by a geologist and archaeologist were accepted as genuine.