Sea salt
Sea salt was extracted during the Roman period, and a string of settlements were set up along the Polden Hills. Some possible settlement sites are also known in the Draycott and Cheddar Moors and around Highbridge. The discovery at Shapwick of 9,238 silver Roman coins, the second largest hoard ever found from the Roman Empire included coins dated from as early as 31–30 BC up until 224 AD. The hoard also contained two rare coins which had not been discovered in Britain before, and the largest number of silver denarii ever found in Britain.