Scientists report a new finding that revises the timeline for how Northern Ireland’s volcanic rocks that include the Giant’s Causeway formed. All three outlets say the study concludes that the volcanic activity produced the relevant rocks in a much shorter period than previously thought—about 5.5 million years. Two reports describe this as a direct discovery about the formation of the volcanic rocks, while the Irish Examiner adds that the new timeframe is roughly eight million years less than earlier estimates. The updated estimate suggests that the region’s volcanic events occurred over a shorter span, which may change how researchers understand the pace and sequence of past volcanic activity connected to the Giant’s Causeway. The accounts agree on the central figures—an approximate 5.5 million-year formation period and the reduction versus earlier dating—while focusing primarily on the significance of the revised chronology for Ireland’s volcanic history. The reporting does not include additional methodological details, names of researchers, or publication information in the provided excerpts.