Protesters have said they are taking part in a "mass trespass" at Stonehenge against the Government's £27 billion roads programme and plans to dig a tunnel near the prehistoric monument. The group, who described themselves as an alliance of local residents, ecologists, activists, archaeologists and pagans, gathered at the Wiltshire site at about noon on Saturday. They are protesting against the Government's planned £27.4 billion investment in the strategic road network across the country, as well as a controversial £1.7 billion plan to dig a road tunnel near Stonehenge. Transport Secretary Grant Shapps gave the go-ahead to the scheme in November, against the recommendations of planning officials, who warned it will case harm to the World Heritage Site. Protesters said they also gathered in support of Save Stonehenge World Heritage Site, which has launched a legal challenge to Mr Shapps' decision. English Heritage closed the site to the public for the rest of the day after the arrival of the protesters.