Today we are experiencing global average sea levels rising by 3.4mm (0.13 inches) per annum - climate.nasa.gov. However, nearly 13,000 years ago an event occurred which caused sea levels to rise rapidly, maybe by 10m in a decade (1,000mm per annum), and certainly over a period of c1150 years by an average of around 17.5mm per annum. The event was the impact of a meteorite on the Hiawatha Glacier in north west Greenland which triggered a climatic phase named the Younger Dryas period. The impact event is dated to 10765BC (+/-50 years). The memory of rising sea levels, initially rising very rapidly as millions of cubic kilometres of ice were vaporised and the influx of fresh water disrupted sea currents, has come down to us in numerous legends - some 500 have been enumerated. The most famous being Noah and the story upon which Noah was based - the Sumerian hero, Utnapishtim. Conventional historians view human societies 13,000 years ago as simple hunter gatherers - no farming had started, therefore there was no surplus food to support other activities and therefore no urban societies. However, as examined in this book, there is surprising evidence of sophisticated human knowledge and settlements dating from prior to the Hiawatha impact and much to indicate some scattered survivors of the event. When this evidence is fully evaluated, conventional history will require radical rewriting.