Part of a large earthen dyke which is supposed to have surrounded the entire mound is still left exposed on the north side. It measured from 20 to 30 feet in breadth at the base and 11½ feet in height. Boni, in his description of this dyke, states that a section which ought to be conical is not so, but more slanting on the outside; also, at the inner side, its contents are occasionally seen to overlap the terramara beds. From this and some other structural details he adduces evidence to show that the dyke had been subsequently added to by the terramaricoli during their occupation of the settlement. Bearing in mind what Pigorini says about Castione, the significance of these observations will be readily perceived.
Fig. 84.—Montale. All 1⁄2 real size.
Fig. 85.—Montale and various other Terremare in the vicinity. All 1⁄2 real size.
For illustrations of relics from Montale see [Fig. 84] and [Fig. 85], Nos. 1 to 6; and for its literature B. 157, 184, 186, 204, 231, 298b, 367, 386, 421, 422, 425a'. An account of the excursion to Montale by the members of the International Congress is given in their Proceedings for 1871 (Bologna).