The Darjeeling Himalayan Railway, a UNESCO World Heritage Site, also known as the DHR or the Toy Train, is a 610 mm gauge railway that runs between New Jalpaiguri and Darjeeling in the Indian state of West Bengal. It climbs from about 100 m above sea level at New Jalpaiguri to about 2,200 m (7,200 ft) at Darjeeling, using six zig zags and five loops to gain altitude. Six diesel locomotives handle most of the scheduled service, with daily tourist trains from Darjeeling to Ghum ??India's highest railway station ??and the steam-hauled Red Panda service from Darjeeling to Kurseong. Steam-enthusiast specials are hauled by vintage British-built B-Class steam locomotives. India.