The 25th batch of over 3,800 Amarnath pilgrims left the base camp in Jammu for the twin base camps of the 3,880-metre-high Amarnath cave shrine in south Kashmir Himalayas on Monday, officials said. A total of 3,862 pilgrims left Bhagwati Nagar Yatri Niwas here in a convoy of 125 vehicles amid heavy security of the Central Reserve Police Force this morning, the officials said.