In this essay the author deals, in a complete and orderly way, with the many arguments and the most varied hypotheses related to the arcane mysteries of the Ark of the Covenant. He wants to give the attentive reader the information they seek in a chronological way and, as far as possible, historically 'probable'. Probable, therefore, and not 'possible' because, in truth, there is little factual information about the Ark against a huge number of hypotheses, more or less consistent with the historical documents found so far.It is true that the material is difficult but no less fascinating.The history of the Ark has fascinated the author for years, to the point of making it a reason for constant research and study. With this work, Santi intends to share information with the reader, specifying that no one can claim the right to be the bearer of the truth regarding any arcane subject, and the one related to the Ark is more so than others. However, some serious and credible hypotheses led the author to be convinced that the sacred artifact still exists, kept somewhere on the planet.A place that, however, we are not given to know with absolute certainty.