The Taoiseach has advised people concerned about the M3 motorway going through the Tara Skryne Valley to go and visit the site.
Bertie Ahern was reacting to comments from the new chairman of the Oireachtas Environment Committee, Sean Haughey.
Mr Haughey said that putting a motorway through the valley was 'bordering on vandalism'.
Mr Ahern added that the new road would be further from the Hill of Tara than the existing one.
However, the Labour leader, Pat Rabbitte, warned that the Government was walking straight into prolonged and expensive litigation that would not allow for a faster commute to Dublin.
The Taoiseach said he wished there was an alternative route, but there was not.
