The UNESCO has cautioned that the damage caused to the Darjeeling Himalayan Railway (DHR)in the northern part of West Bengal due to the Gorkhaland agitation may put in peril the World Heritage tag it earned in 1999. Two prime stations Gayabari and Sonada were torched while an arson attempt was made on Elysia Building – the headquarters of the DHR during the pro-Gorkhaland bandh.