Thanks for all the info on the above. I am only a voluntary helper. My wife and I did one of the guided walks a few years ago.I agree It is not a very good subject for children, but I don't know what angle the school are taking yet. Regards Bazzer Portchester Fareham Hampshire www.clarkeology.com -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.409 / Virus Database: 268.14.7/538 - Release Date: 18/11/2006