Possibly the swiftest route to your roots.
Irish genealogy website directory.
www.rootsweb.ancestry.com/~fianna/history/prehist1.html
Description:
The Ceide Fields of Co. Mayo is an area that is indistinguishable from the miles of bogland that stretch far to the west on the Belmullet peninsula. The Ceide Fields site, in County Mayo, covering more than four square miles of ordinary farmland, comprises the oldest enclosed landscape in Europe. Buried for almost fifty centuries, Ceide Fields is a snapshot of the Irish countryside from five millennia ago. One of the qualities that distinguishes Ceide Fields from other settlements is that, unlike places in Europe that have been under continuous cultivation for centuries, agriculture stopped 5,000 years ago.