tjj wrote:
As it happens I am just watching How Earth Made Us on BBC2 which is about ... rivers (some fabulous rock art in the Sahara as well).
Great series! If you liked the Sahara rockart, you might like some Namibian rockart that Jane & I saw a cuppla years ago http://www.flickr.com/photos/71451816@N00/sets/72157602522359626/ if you've not seen it before.love
Moth