Note 34 — Chapter VII · Camps, Fortifications, Vitrified Forts; Santorin; The Towns upon the Hill of Hissarlik.

Passing to France, we find the greater number of vitrified forts in the Département de la Creuse. At Châteauvieux is an enceinte of oval form, 416 feet wide at its broadest part.34 An earthwork, 22 feet wide at the base, serves as foundation to a wall, the outer and inner portions of which consist of small granite stones, arranged in regular layers. The space between the two series of small stones is filled in with a sheet of melted granite, some twenty-four inches wide, resting on calcareous tufa. The whole mass is completely vitrified, and regular geodes or nodules lined with crystals and draped with pendent drops of melted rock have been produced.