What happened 12900 years BP and 11600 years BP placed humanity in a dark age which lasted millenia. Whenever there has been an attempt to recall those memories, by digging into knowledge sources, there have been effort to suppress them such the ones seen by the destruction of the Hellenistic culture in the 4th and 5th centuries and the destruction of the Precolumbian cultures in the 15th and 16th centuries. The value of the tablets is that they transport us to an era that we though forgotten.