> Around me were more than 30 dwellings and tombs, and that was just a tiny fraction of the remains here. I tried to imagine the landscape as it may have been thousands of years ago: green, lush and teeming with people as they moved noisily round, herding goats and calling out to each other.

When I read comments like that, I am reminded that changes in climate and terrain have always been going on. If we saw a green, lush environment turn to desert today, we would inevitably say it was global warming/climate change.

I wonder what they blamed it on..