The promontory of Circeo , with a maximum height of 541 m , is a Mesozoic limestone - dolomite massif with a peculiar island shape .
The promontory of Circeo , with a maximum height of 541 m , gives its name to the whole park .
The promontory of Circeo , with a maximum height of 541 m , is a Mesozoic limestone - dolomite massif with a peculiar island shape , and gives its name to the whole park .