Elephant conservation in northern West Bengal has been set back due to high-levels of human–elephant conflict and elephant mortality owing to railway accidents. The railway track between Siliguri and Alipurduar passes through of various forest divisions. Every day, 20 trains run on this track at high speeds. Elephants that pass through from one forest patch to another dash against the trains and die. A total of 39 dead elephants were reported during the period of 1958 to 2008, of which ten were reported killed between 2004 and 2008.