Hello Paul , check a wee bit down for a posting on angels .BRAC has most of the Muir of Gormack /Loch Bennachally stuff including new finds . The stone at Leco Beannie is called Clach na Nathraiche = serpent= adder ,area not the best for them but they are there . or Marriche = Labyrinth . I haev had a good look around and there are plenty of of "natural" but nothing man made except a couple of basins near the loch .