The following is a link to the spring news letter of this website..
http://www.heatherandhillforts.co.uk/images/stories/pdf/spring2010newseng.pdf
in which if you scroll down there has been a 'restored' bronze age burial mound, destroyed partly by 19th 'excavators' and also by walkers on Penycloddiau hillfort on the Clwydian range...
What I like about the H/H website, that it gets people, and children involved, in looking after sites, and of course Wales is my favourite place ;)