Here and there rocks jut out from hard, smooth sand beaches, adding variety to the scenery. “Lovely and lost and half a world away” Lone Rock at Cavendish in The Nationa' Park. . Modern mermaids on the shores of the age- old sea beckon you and your family to join them in a happy, carefree holiday in Prince Edward Island’s beautiful National Park. “Breathes there a man with soul so dead” as to refuse?