Shane's Castle and the O'Neil estate are situated upon Lough Neagh, the largest lake in Great Britain. There is a legend that this sheet of water covers land that was once cultivated--cottages, castles, and even villages. The peasants say that there was once a well in the midst of this country--an enchanted well--which was always kept covered with a heavy stone, lest its waters should rise and overwhelm the land. One day, a careless woman went to this well to get water to boil her potatoes in, and hearing her baby cry, ran home without waiting to cover the well--which presently began to leap up in a great column, like a water-spout of an under-ground sea--and poured out so fast and furious, that before many hours the whole valley was overflowed, and that night, the moon smiled to see herself reflected in a new lake. On our route from Belfast to the Giant's Causeway, we passed through several towns, of little importance now, though of some historical note--such as Carrickfergus, Larne, and Glenarm. This last is a beautifully situated town, with a pleasant little bay, which usually affords a safe shelter for shipping on a coast somewhat renowned for wrecks and disasters. Here is a fine castle--the seat of the ancient family of the MacDonnels--Earls of Antrim. Scarcely any thing in the world can be grander or more beautiful than the coast road all the way from Glenarm to the Giant's Causeway. It is altogether too fine to be described--it should be painted, not written about. One of the grandest points in the scenery is the great promontory of Benmore, or Fairhead. From the sea it rises an immense precipice, formed of a multitude of enormous basaltic columns, at the highest point more than five hundred feet above the water. We reached the Causeway late in the evening--so hungry and tired that we were very glad to get our supper and go to bed, without putting our heads out of doors. In the morning early we engaged a guide, and set out on our tour of sight-seeing. The Causeway is formed by a vast collection of rocky columns--mostly as regular in shape as though cut by masonry--five-sided, six-sided, seven or eight-sided--piled and packed together, varying much in height, but little in size. Some form a floor almost as even as a city pavement--some form gradual steps leading down to the sea--and some tower upward, like spires and turrets. There is a very singular collection of these columns on the side of the highest cliff, a hundred and twenty feet in height, called "the Giant's Organ," from their resemblance to the pipes of that instrument. According to tradition, the mighty Giant, Fin Mac Cual, was musical in his taste, and used to give himself "a little innocent divarsion" here, after his hard labors in building the Causeway. Even now, when the sea roars, and the deep thunder rolls along the rocky coast, they say--"the giant is playing on his big stone organ under the cliff."