About 45 acres ( 18 ha ) of wheat and turnip fields were dislodged when a great chasm more than 300 feet ( 91 m ) across , 160 feet ( 49 m ) deep and 0.75 miles ( 1.21 km ) long was formed .
About 45 acres ( 18 ha ) of fields growing wheat and turnips were dislodged when a great chasm was formed more than 300 feet ( 91 m ) across , 160 feet ( 49 m ) deep and 0.75 miles ( 1.21 km ) long .