Above the eastern side of the valley, where the Derwent takes its deep and sinuous course towards the alluvial lands, the chalk first makes its appearance in the neighbourhood of Acklam, and farther north at Wharram-le-Street, where picturesque hollows with precipitous sides break up the edge of the cretaceous deposits. Eastwards the high country, scarred here and there with gleaming chalk-pits, and netted with roads of almost equal whiteness, continues to the great headland of Flamborough, where the sea frets and fumes all the summer, and lacerates the cliffs during the stormy months. The masses of flinty chalk have shown themselves so capable of resisting the erosion of the sea that the seaward termination of the Wolds has for many centuries been becoming more and more a pronounced feature of the east coast of England, and if the present rate of encroachment along the low shores of Holderness is continued, this accentuation will become still more conspicuous. The open roads of the Wolds, bordered by bright green grass and hedges that lean away from the direction of the prevailing wind, give wide views to bare horizons, or glimpses beyond vast stretches of waving corn, of distant country, blue and indistinct, and so different in character to the immediate surroundings as to suggest the ocean. Here and there up against the sky-line appear long dark coppices, and half-hidden in a hollow, a purely agricultural hamlet nestles, its presence being only made apparent by the slender spire or grey tower peeping over the hedges. On a morning when the wind is marshalling the clouds in echelon across the sky, and belts of shadow go a-hunting across the swelling hill-sides, the scenery wears the aspect illustrated here; the sunny, smiling landscape I always expect on chalk uplands. At Flamborough the white cliffs, topped with the clay deposit of the glacial ages, approach a height of 200 feet; but although the thickness of the chalk is estimated to be from 1,000 to 1,500 feet, the greatest height above sea-level is near Wilton Beacon, where the hills rise sharply from the Vale of York to 808 feet, and the beacon itself is 23 feet lower. On this western side of the plateau the views are extremely good, extending for miles across the flat green vale, where the Derwent and the Ouse, having lost much of the light-heartedness and gaiety characterizing their youth in the dales, take their wandering and converging courses towards the Humber. In the distance you can distinguish a group of towers, a stately blue-grey outline cutting into the soft horizon. It is York Minster. To the north-west lie the beautifully wooded hills that rise above the Derwent, and hold in their embrace Castle Howard, Newburgh Priory, and many a stately park.