"This is a very lofty eminence, in Floyd County, from the top of which the view is sublime. On the north, east, and west, the beholder is amazed at the boundless succession of mountains rising beyond mountains--while far away to the south, the plain seems to stretch to an interminable length. On the east, The Knob is accessible on horseback, being two miles in height from the beginning of the ascent to the highest point; on the west it breaks off precipitately, and presents the shape of the animal whose name it bears. This mountain is seen sixty or eighty miles, towering above all others. On the highest point is a space of about thirty acres, which is so elevated that not any trees grow there; and in the warmest days of summer, the visitor requires thick clothing to protect him from the cold. The spot is covered with fine grass, strawberry-vines, and gooseberry and currant-bushes. The fruit upon them is of superior flavour, but it does not ripen until two or three months later than upon the low-lands." THE MAMMOTH MOUND. This curiosity is in Marshall County, about a quarter of a mile from the Ohio; it is 69 feet high, and 900 feet in circumference at the base, and has a flat top about 50 feet in diameter. "A few years since a white oak, of about 70 feet in height, stood on the summit of the mound, which appeared to die of age. On carefully cutting the trunk transversely, the number of concentric circles showed that it was about 500 years old." CAVES. Besides Weyer's, there are other caves in the State, which are great curiosities, two of which are said to be nearly equal to Weyer's. One of them is in Page County, about a mile west of Luray, and the other in Warren County, about three miles south of Front Royal. POWELL'S FORT VALLEY. This curiosity is in Page County; and Kercheval gives the following account of it: