As chants of ‘Bam Bam Bhole’, beats of the damroo (drum), and spiritual hymns rang in the air, the first batch of Amarnath yatris, consisting of 3,488 pilgrims, left for the two base camps in Nunwan (Pahalgam) and Baltal (Ganderbal) in Kashmir Valley early Friday amid a multi-tier security cover.As chants of ‘Bam Bam Bhole’, beats of the damroo (drum), and spiritual hymns rang in the air, the first batch of Amarnath yatris, consisting of 3,488 pilgrims, left for the two base camps in Nunwan (Pahalgam) and Baltal (Ganderbal) in Kashmir Valley early Friday amid a multi-tier security cover.