Calling all armchair generals! Boudica's Last Stand.

[Nathan Ross]

those poor Brits would have had no where to park their waggons let alone squeeze past the Uber camp to a valley

The camp is behind the Roman lines, the Britons are in front of it. I can't understand why this seems to be so confusing!

maybe defensive positions on ridges would cast the net a little more reasonably.

Nope - this is a field battle. Nothing in the Tacitus description implies 'defensive positions', ramparts, earthworks, or ridges for that matter.

Paulinus needed a camp to house his men before the battle. He was not building Hadrian's Wall.

15ha is not particularly big compared with some of the camps in northern England, Wales and Scotland, which were often built in far more challenging terrain.