The Old Bay State presents a front to the rough Atlantic like a gladiator at bay. She has in Cape Cod one defensive forearm boldly extended, and she likewise is prepared, if necessary, to thrust out the other, which keeps close guard upon her rugged granite breast in Cape Ann. These capes are the portals of Massachusetts Bay, and of the ocean entrance to Boston. Everyone, in viewing the map, marvels at the extraordinary formation of Cape Cod. Thoreau, who in days gone by tramped all over the Cape, says, "A man may stand there and put all America behind him." This great sandy headland stretches eastward from the mainland at Sandwich about thirty miles, then turns north and northwest thirty miles more, finally terminating in a huge hook, bent around to the south and east again, and forming the spacious landlocked harbor of Provincetown. At Harwich and Chatham the elbow sharply bends, the shoulder is at Buzzard's Bay, the wrist at Truro, and the closing fingers make Provincetown's haven. The Cape is nearly all white sand, with boulders occasionally appearing, particularly near the extremity. Thin layers of soil extend as far as Truro, but the sand is seen through many rents, and the extremity is completely bare, being a wilderness of sand, kept in partial motion by the winds, and making constantly shifting dunes. The prevalent northeast winds and surf are regarded as having made the hooked end of the Cape by gradually moving the sands upon the shore around to the west and south. This hooked end impressed the Colonial navigators, and the ancient Dutch maps call it Staaten Hoeck, and the enclosed waters Staaten Bay. The extremely white sand, in contrast with the darker rocks of more northern shores, led Champlain to name it Cape Blanc. Gosnold, as already announced, from the abundance of codfish named it Cape Cod, whereof the faithful historian, Cotton Mather, who records the fact, writes naïvely that he supposes it will never lose its name "till swarms of codfish be seen swimming on the highest hills."