Of this disastrous event one believed to be able to make date the history from the hill of the Guard. With believing about it of old chronicles, its rocks, now rough and naked, were covered by the mysterious forest about which Lucain speaks with Deliver III of its Pharsale. According to the Latin poet, there was close to the Roman camp a crowned wood if touffu that the rays of the sun had sorrow to penetrate there.
On him such a terror weighed that the légionaries quivered when they accepted the command to cut down the oaks of them; the proconsul saw himself constrained to strike the first blows to harden the axe between the hands of his soldiers.
Actually, if the mysterious forest is not a simple invention of poet, nothing makes it possible to determine the site of it.

In the same way could one subscribe to assertions also vague only those: after his victory, César would have dedicated a furnace bridge to Cérès or Vesta, on the hill of the Guard; before him, Phéniciens would have raised there a monument of the same kind with Baal Milkarth and Phocéens, a temple with this Artérmis goddess, who made in some way left the hardware crowned of any grecque colony.

The Greeks and the Romans probably used a height so favourable with optical indication. Large Cartulaire de Saint-Victor (with the departmental records of the Rhone delta) indicates it several times under the name characteristic of " Guard ", with Xe century. A watchtower was consequently established on the node from where signals were done announcing the ships in sight.
The danger that the barbaresque hackers made plane on their shore had to learn how to the Marseillais " to keep " sea. A document of XVIe century mentions the Guard among the watchtowers forming, of Turbie in the Camargue, a continuous system of indication.