As punishment for killing his wife and children, Jan's ghost returns to the pool every night, attempting to empty the contents with a broken shell. A pack of ghostly wild dogs watch over him should he try to escape. One version of the same tale states he did escape, but now he sweeps the sand from Porthcurno Cove to Mill Bay; he can be heard screaming as the sea washes the sand back again. The Pool is also the supposed location where Sir Bedivere returned Excalibur.
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