Am I reading that right? They are using heavy equipment to do some preliminary archaeological exploration of the mounds, so they can see where to lay the roads? That sounds bad enough, not to mention it's a burial site and needs even more respectful care of human remains than of artifacts.
But there's got to be good and bad with everything. I think there must be a balance, or maybe some hidden benefit in carrying the tradition forward and exposing the site to more traffic (literally and figuratively). The cathedral of Cologne is made of limestone, which responded very badly to the coal-burning trains and acid residues when they built the railroad to come in right under it in the 19th century (and that was while they were still putting on the towers, after hundreds of year in construction!), and it's still a problem. On the other hand, they are constantly repairing and renewing the bits that are crumbling, and there's a whole new generation of skilled and creative stonemasons and gargoyle-cutters that work on this and have awakened an all but lost craft to do it. Some of the newer gargoyles are absolutely delightful, and it all works in.
Not quite the same issues, of course. But if they do it right, it could open up a whole new era of awareness of these national treasures, and innovative ways of working them into modern life while keeping them safe for the future.