The controversial Irish highway meant to reduce traffic congestion around Dublin continues to uncover and roll over more archaeological sites.

The latest discovery is tomb engravings dating back 6,000 years — part of a large stone monument, or megalith. The engravings are similar to those that decorate other prehistoric passage tombs.

As many as 40 archaeological sites have been uncovered along the route of the M3 highway. These are all related to a single large monument, the Hill of Tara — the historical home of the high kings of Ireland.

Even though the site was declared a national monument, and the EU is suing the Irish government for not adequately protecting its national treasures, the project continues. Arguments that the road should go around the complex rather than through the middle of it have not been able to change things, though efforts continue.

National Geographic: Ancient Tomb Art Found in Path of Irish Highway

We’re doing another women’s trip to Ireland this summer, though we’ll be staying well clear of this construction zone. The country has a wealth of history, and it seems a shame to remove the irreplaceable and unique, in favor of the ubiquitous and unsightly.