The gorge protected the Roman flanks from attack while the forest would impede approach from the rear; this would prevent Boudica from bringing considerable forces to bear on the Roman position, and the open plain in front made ambushes impossible.
The gorge protected the Roman flanks from attack. The forest would impede approach from the rear. This would prevent Boudica from. This is bringing considerable forces. This is to bear on the Roman position. The open plain in front made ambushes impossible.