Abandoned man-made island off Lincolnshire coast

An abandoned man-made island off the Lincolnshire coast was built in the 1970s for a government water storage experiment. The project aimed to create a freshwater reservoir but was deemed unsuccessful due to saltwater contamination. The Outer Trial Bank, measuring 250 meters in diameter, was part of the study that cost around £3 million at the time, equivalent to nearly £30 million today. The project was abandoned shortly after its completion. Today, the Outer Trial Bank serves as a sanctuary for nesting seabirds and is located within The Wash's nature reserve. The smaller Inner Trial Bank is less visible due to surrounding saltmarsh growth.