sentences:  From the 12th century, the Swanage area was well known for the quarrying of Purbeck Marble, actually a hard wearing form of limestone.Much of this was shipped out through Swanage, originally being loaded into small vessels from horse carts driven into the waters of Swanage Bay.In 1858 a pier, now known as the "Old Pier", was built in deeper water and linked to the stone stores on the waterfront by a horse-drawn tramway.