Or you may enter some great glen from the foot, where it widens into vale, or strath--and there are many such--and some into which you can sail up an arm of the sea. For a while it partakes of the cultivated beauty of the lowlands, and glen and vale seem almost one and the same; but gradually it undergoes a strange wild change of character, and in a few miles that similitude is lost. There is little or no arable ground here; but the pasture is rich on the unenclosed plain--and here and there are enclosures near the few houses or huts standing, some of them in the middle of the glen, quite exposed, on eminences above reach of the floods--some more happily placed on the edge of the coppices, that sprinkle the steep sides of the hills, yet barely mountains. But mountains they soon become; and leaving behind you those few barren habitations, you see before you a wide black moor. Beautiful hitherto had been the river, for a river you had inclined to think it, long after it had narrowed into a stream, with many a waterfall, and in one chasm a cataract. But the torrent now has a wild mountain-cry, and though there is still beauty on its banks, they are bare of all trees, now swelling into multitudes of low green knolls among the heather, now composed but of heather and rocks. Through the very middle of the black moor it flows, yet are its waters clear, for all is not moss, and it seems to wind its way where there is nothing to pollute its purity, or tame its lustre. ’Tis a solitary scene, but still sweet; the mountains are of great magnitude, but they are not precipitous; vast herds of cattle are browsing there, on heights from which fire has cleared the heather, and wide ranges of greensward upon the lofty gloom seem to lie in perpetual light. The moor is crossed, and you prepare to scale the mountain in front, for you imagine the torrent by your side flows from a tarn in yonder cove, and forms that series of waterfalls. You have been all along well pleased with the glen, and here at the head, though there is a want of cliffs of the highest class, you feel nevertheless that it has a character of grandeur. Looking westward, you are astounded to see them ranging away on either side of another reach of the glen, terrific in their height, but in their formation beautiful, for like the walls of some vast temple they stand, roofed with sky. Yet are they but as a portal or gateway of the glen. For entering in with awe, that deepens as you advance almost into dread, you behold beyond mountains that carry their cliffs up into the clouds, seamed with chasms, and hollowed out into coves, where night dwells visibly by the side of day; and still the glen seems winding on beneath a purple light, that almost looks like gloom; such vast forms and such prodigious colours, and such utter stillness, become oppressive to your very life, and you wish that some human being were by, to relieve by his mere presence the insupportable weight of such a solitude.