A fresh batch of 2,100 pilgrims left Jammu city for the twin base camps in the valley to join the Amarnath Yatra on Friday, officials said. The 62-day annual pilgrimage to the 3,880-metre-high holy cave shrine of Amarnath in the south Kashmir Himalayas commenced from the twin tracks -- the traditional 48-km Nunwan-Pahalgam route in Anantnag and the shorter 14-km Baltal route in the Ganderbal -- on July 1.