I have been off roading on a fairly large track in and arount the Moel Tryfan slate quarry near the small village of Fron (off the A487 after Caernarfon). The track appears to have been created by enthusiasts, and covers both common land, and private land. Does anyone know if using this track is legal? It is an amazing place for punishing a Land Rover, and I've enjoyed several afternoons of mud throwing there, but I am always nervous whenever I see the police helicopter pass overhead.