Tourist,
Thank you - knowledge of LOCAL customs and structures is an enormous help
and that's what was missing in making a correct analysis. To me they looked like the holes I've blown in the ground using ANFO hence my question of "are they bomb craters" as I couldn't see them being that.
I did a quick look up of Karez holes. A couple of nice pictures here that to the untrained eye is deceiving.
Hitch on Heroin, and Other Perspectives
Karez water system in the Turpan Depression in China - 42-24355457 - Rights Managed - Stock Photo - Corbis
I think most of us are "untrained in photo analysis" unless someone here used to do it in the RAF and is willing to chime in. I only ever looked at structures in aerial photos before it was "exercise raided".
Edit
Tourist
By the way, "bet" is a dangerous word to use around here