An Impact Event in 3114BC? The Beginning of a Turbulent Millennium. Recurring Phenomenon: The Cosmic DisasterThe Mayan CalendarStonehengeA Possible Source for the 3100 BC Event Collected and commented by Timo Niroma, Helsinki, Finland Go to the Evidence of Astronomical Aspects of Mankind's Past and Recent Climate Homepage Recurring Phenomenon: The Cosmic Disaster Besides the most evident cosmic catastrophes ca. 2200 BC and 2345 BC there are other events during the Holocene that are so widely global and difficult to explain by only the Earth's own mechanisms that a cosmic explanation must evidently be taken into account. The first so-called...