The Indian Army has rescued about 1,500 tourists who were stranded in Nathu La in East Sikkim, an official release said on Saturday. Some 1,500 to 1,700 tourists travelling in about 300 vehicles from Gangtok got stranded at various stretches of the Jawaharlal Nehru Road between 13th Mile and Nathu La on Friday evening due to heavy snowfall, it said.