Unprepossessing to our eyes, but designed to make an impact, he turned up at Kahf wearing self-sewn shoes and a striped headdress made of Yemeni wool. He flamboyantly rode a white donkey. There was an undeniable theatricality about the man - the drama was perhaps intuitive but possibly more self-conscious than he would have cared to admit. He was called Sinan. But he became better known by a nickname: 'The Old Man of the Mountain'.