The single defensive wall of Minerve-la-Vieille can be seen from an altitude of 10 kilometers (if you know what to look for), and is possibly the biggest visible prehistoric structure in the south of France.
At 6 km. it looks like this, a white bar in the top left corner:
At 2 km. like this:
The visible section is about 60 metres long, 4 metres wide, and 2 m. high. It is a massive and dramatic example of an ‘ éperon barré‘ – literally a barred spur, a closed-off 5 hectare tip of a high ‘peninsular’ with sheer drops of 40 metres on the east and west flanks.
The term ‘oppidum’ might seem inappropriate – it more resembles ‘une enceinte fortifiée ‘ similar to that at Le Cros near Caunes, than the more compact Gallo-Roman structures like Pic St. Martin. There are no documents on the web to be found about it – just a couple of brief mentions:
un camp celtique (oppidum) appelé « Minerve-la-Vieille », est délimité sur deux faces par un angle de la falaise à pic, et protégé sur sa troisième face, par un mur colossal en pierre sèche (long. 80 m. X haut. 2 m. X larg. 2m50).
It certainly is a ‘colossal wall’ – and placed in the midst of a wilderness of scrub, it’s one of the strangest places I’ve visited.
More photos and info on the Minerve-la-Vieille Page.