Moreover, in this isle of Brittia, men of ancient time built a long wall, cutting off a great portion of it: for the soil, and the man, and all other things, are not alike on both sides; for on the eastern (southern) side of the Wall, there is a wholesomeness of air in conformity with the seasons, moderately warm in summer, and cool in winter. Many men inhabit here, living much as other men. The trees, with their appropriate fruits, flourish in season, and their corn lands are as productive as others; and the district appears sufficiently fertilized by streams. But on the western (northern) side all is different, insomuch indeed, that it would be impossible for a man to live there, even half an hour. Vipers and serpents innumerable, with all other kinds of wild beasts, infest that place; and, what is most strange, the natives affirm, that if any one, passing the Wall, should proceed to the other side, he would die immediately, unable to endure the unwholesomeness of the atmosphere. Death also, attacking such beasts as go thither, forthwith destroys them.... They say that the souls of men departed are always conducted to this place; but in what manner I will explain immediately, having frequently heard it from men of that region relating it most seriously, although I would rather ascribe their asseverations to a certain dreamy faculty which possesses them.—_Giles’s Ancient Britons_, I. 404.
The next defile is Caw-gap; some ruined cottages, formed of Wall-stones, stand in it. The extreme jealousy with which the Romans defended an exposed situation is well shewn here. The fosse, which guards the pass through the low ground, is discontinued on the western side as soon as the Wall attains a sufficient elevation, but upon the the ground drooping, though only for the space of a few yards, it re-appears for that short distance.
A road runs through this pass to the north, which soon becomes a mere track. It passes a solitary house, called Burn Deviot, nearly due north from the gap, which was long the resort of smugglers and sheep-stealers. The memory of its last tenants, Nell Nichol and her two daughters, who were a pest to the country, is still fresh in the district. Though many years have elapsed since any one occupied the dwelling, lights are said often to be seen at the windows at night, visible tokens of the presence of the spirits of the murdered children of Nell’s daughters.