It all depends on who's present. It was only because of road builders that Newgrange was found. The little bump on the top of the ridge seems a good source of rocks to crush. Fortunately they dug into the front and came across the carved entrance stone before any real damage was done. The main man stopped the robbing immediately. It may not have been known today if they hadn't stumbled across it.

Many others weren't so fortunate though ...