_WHITLEY CASTLE_ is the modern name of another outpost, which is situated on the Maiden-way, as far south of the Wall as Bewcastle is north of it. An imperfect inscription found here, and described by Camden and Horsley, commemorates the dedication of a temple to Caracalla, in his fourth consulship (A.D. 213), by the third cohort of the Nervii. As the Notitia places the third cohort of the Nervii at ALIONIS, it is conceived that such may have been the ancient designation of the camp at Whitley Castle. The station stands upon the gently inclining side of a hill, about two miles north of the town of Alston. The railway approaches within a few furlongs of it. The form of the camp is peculiar, being that of a trapezoid, whereas the usual figure is that of a parallelogram. In another respect it differs from all the other camps that we have hitherto examined; it is surrounded by an extraordinary number of earthen entrenchments. On the western side, which is the most exposed, there are no fewer than seven ditches, with corresponding ramparts, and on the north, four. These earth-works are in a state of wonderful preservation. The strength of these lines, and the comparative absence, both within and without the station, of Roman stones, render it probable that the garrison trusted to breastworks of earth, rather than of masonry. The general level of the camp is elevated above the surface of the contiguous ground, in consequence, probably, of the mass of ruins which it contains. Its whole area, including the entrenchments and ditches, amounts to nine acres. A large altar procured from the station is in the neighbouring farm house; the inscription is illegible, but it has on the upper part of its four sides, a carving in bold relief. [Sidenote: ROMAN DUNGHILL.]