A little to the north of Challacombe is the great hill of Chapman Burrows, where stands a 'tall, lean slab of slate, the Longstone.' It is nine feet high, and in the broadest part about two feet eight inches wide. The history of the Longstone is unknown, but the suggestion has been made that it may be an ancient relic, a menhir, and this view is supported by the fact that about a dozen large tumuli lie on the slopes around. One of these is between ten and twelve feet high and three hundred feet round at the base. Burrows are found all over Exmoor. 'The eye of reflection sees stand uninterrupted a number of simple sepulchres of departed souls.... A morsel of earth now damps in silence the eclat of noisy warriors, and the green turf serves as a sufficient shroud for kings.' By far the greatest part of Exmoor lies in Somerset, so that here one must not wander far amongst great round hills, wide distances, and deep combes. One has heard of strangers who have been disappointed by the first sight of Exmoor, for its heights are not very evident. There are no peaks, no sharply-cut isolated hills, nor any with a very striking outline, except Dunkery; but the whole moor is a tableland, across which the coach road runs at a level from twelve hundred to fourteen hundred feet above the sea: 'A bare rolling waste of moorland stretching away into the eastern distance, like the ocean "heaving in long swells,"' and large spaces of bracken, of bogs fringed with cotton-grass and rough grass and whortleberries, among which rise little glittering streams that splash their way down into the valleys beneath. The sides of the glens leading from the borders of the moor are crowded with endless masses of mountain-ashes, and whether the leaves make a background to the flat creamy clusters of sweet, heavily scented flowers or to great bunches of scarlet fruit, the long ranks give a very rich effect. Mr R. J. King has observed that Exmoor, 'still lonely and uncultivated,' was probably at one time during the English conquests a boundary or 'mark,' 'always regarded as sacred and placed under the protection of some deity or hero.' Amongst some very interesting remarks, he says that the intermingling in Devonshire of the Celtic and Teutonic races 'may be traced in folk-lore, not less distinctly than in dialect or in features.... Sigmund the Waelsing, who among our English ancestors represented Sigfried, the great hero of the Niebelungen-lied, has apparently left his name to the deep pool of Simonsbath ... again, side by side with traditions of King Arthur, to the parish of Simonsward in Cornwall.'