In relation to the collection of stones and tying in with Baz and Moz's excellent Jersey posts. The stones used to build the wonderful Hougue Bie passage grave, some weighing up to 20 tonnes were collected from various locations around Jersey and then dragged uphill to the site.
Many of the Cumbrian circles utilise local stone but contain one 'foriegner', I have alway liked to this of this as a kind of 'nod to the visitors'.