Plans for massive new housing inside the Cairngorms national park could be sunk by legal action being brought by three Scottish based environment groups in the Court of Session. The groups are challenging the Cairngoms national park authority’s housing plans which provides for over 2000 new homes, including 1500 at An Camas Mor, near Aviemore, which, it is claimed, would be the largest housing development in any UK national park. The Cairngorms Campaign, the Scottish Campaign for National Parks, and the Badenoch and Strathspey Conservation Group are also challenging developments at Grantown-on-Spey, Nethy Bridge, Carrbridge and Kingussie. The park authority…