The British Geological Survey says there was a magnitude 5.4 earthquake in the area in 1984.
It describes that year's event as "significant".
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About time, I hear you say! Summer is here, and temperatures are soaring!
Welsh public opinion appears to be coming to the view that giving the Welsh Government income tax varying powers is not a good idea.
Wales’ Millennium Stadium will be the host venue for the top game in European club football, the Champions League Final.