The Marksville site lies about a mile to the east of the small town of that name, in Avoyelles Parish, Louisiana. Its earthworks, which were first described by Gerard Fowke (1928: 405–34), belong to several distinct components: the Nick site, the Greenhouse site, and the Marksville site proper (Ford 1951: 13–14). The latter component — the oldest of the three — consists of Fowke's “Enclosure A” (Fig. 1), a group of 5 mounds situated on the edge of a steep, eastward-facing bluff and enclosed on the west by a semicircular earthen rampart 4 to 7 feet high and more than half a mile long. Just to the south of this enclosure lies a circular embankment which may be of comparable age. Further south lies the Nick site (Fowke's “Mound 1“) which is known to be younger than the structures of Enclosure A.