| [00:01.557] |
The mainland too, of course, had its burial chambers, like the long barrow at West Kennet. |
| [00:17.362] |
And there were also the great stone circles. |
| [00:20.270] |
The largest at Avebury，but the most spectacular of all at Stonehenge. |
| [00:35.820] |
By 1,000 BC, things were changing fast. |
| [00:39.551] |
All over the British landscape, a protracted struggle for good land was taking place. |
| [00:45.254] |
Forests were cleared so that Iron Age Britain was not, as was once romantically imagined. |
| [00:51.179] |
An unbroken forest kingdom stretching from Cornwall to Inverness. |
| [00:56.509] |
It was rather a patchwork of open fields, dotted here and there with woodland copses giving cover for game, especially wild pigs. |
| [01:07.621] |
And it was a crowded island. |
| [01:09.965] |
We now think that as many people lived on this land as during the reign of Elizabeth 2,500 years later. |
| [01:18.777] |
Some archaeologists believe that almost as much land was being farmed in the Iron Age as in 1914. |
| [01:31.421] |
So it comes no surprise to see one spectacular difference from the little world of Skara Brae, great windowless towers. |
| [01:40.845] |
They were built in the centuries before the Roman invasions. |
| [01:43.839] |
When population pressure was at its most intense and farmers had growing need of protection. |
| [01:50.630] |
First from the elements, but later from each other. |
