3 votes The mystery of the world’s oldest billboard Posted January 26, 2023 by cfabbro Tags: archaeology, language, writing.indus script, indus valley civilization, billboards, mysteries, india.dholavira, author.harish alagappa, source.atlasobscura https://www.atlasobscura.com/articles/oldest-billboard-in-world Link information This data is scraped automatically and may be incorrect. Published Jan 20 2023 Word count 749 words