Roman or celtic attack ramp?

[Nantonos]

Hello.

This photo is better.

http://www.mediterranees.net/civilisati ... allus.html

I dont know the Vallus called Marcus column. My familyan name was write Old Plinius in Naturalis History in 70 BC. Vallus this is Treverian harvesting machine. After 180 years Vallus defend or attack tactics. Why? This problem interrested me.

A harvesting machine and a palisade both have wooden spikes on them, which is probably the reason for their sharing a name. The harvesting machine is what is being referred to here:

Grande fourche de bois en forme de V, munie de dents, et placée en avant d'un chariot (vehiculum), que les Gaulois employaient à moissonner. Un seul boeuf, attelé à un double brancard (amites), poussait devant lui l'appareil à travers le champ de blé, et, à mesure qu'il avançait, les épis étaient pris entre les branches de la fourche, arrachés à leur tige et précipités dans le chariot (Plin. H.N. XVIII, 72 ; cf. Pallad. VII, 2; 2).

I know that stone carvings exist, illustrating this early 'combine harvester' machine, I will see what I can dig out. From memory there is one from Arlon in Belgium. It looks like a box, with two wheels, spikes at the front, and its pushed rather than pulled by the horse, ass, or ox.