What was used by the Romans to make Carthage and the surrounding area unfathomable for generations

The story is nonsense – shortly afterwards Rome began settlingretired veterans on farms in Carthage. The Romans conducted areligious ceremony ploughing a furrow and sprinkling some salt init as a symbol of the end of Carthage, whose people were sold intoslavery. Also think of the prohibitive cost of valuable salt inspreading hundreds of tone of salt over a large agricultural area!Don’t believe fairy stories, however much they are repeated.