<p>Skirly Crag: a hill in the Scottish highlands, in the heart of which nestles a very special lochan.<br>Helen Percy's working life as a shepherd takes her away from her home in the lee of her beloved Skirly Crag for many months of the year.<br>Forget beribboned Bo-Peep dresses. Think instead unbecoming waterproofs, the same shirt worn for a week, jeans smeared with gobs of birth-fluid and mustard-coloured lamb-skitter. Calf-length crinoline gow...