Low tide last week exposed an unusually large patch of World War Two defences on the beach. You read all about this in the recent article from the BBC
https://www.bbc.co.uk/news/uk-england-suffolk-63858626?fbclid=IwAR35gbXRsTdaINgSBCllizRp2hX88nsWEmHHlq3Dypm1q6bWqWv4WmpT2PM