http://penybonthotel.wordpress.com/2012/02/28/treasure-the-tal-y-llyn-hoard/

A bit closer to a description of the site, maybe:

In June 1963 remarkable Bronze shield decorations were found on the southern slopes of Cadair Idris. The location was about 800 feet above the valley floor to one side of the well known walker’s route, the Minfordd Path. The thin sheets of broken metal were packed together as if originally in a bundle and were half- buried in soil beneath a projecting boulder.

Perhaps we should stop there, don't want to be doing the MDers' work for them!