5. Amarnath shrine, Kashmir
The Hindu shrine dedicated to Lord Shiva in Jammu, is the toughest holy yatra as the temple is situated at an altitude of 3,888 metres and the freezing cold is unbearable.
The terrorists took advantage of this situation and attack the pilgrims often. In July, 2002, two people were killed and three injured due to an improvised explosive devices planted in a taxi.
Again in July, 2011, the CRPF foiled a terror plot to kill Amarnath pilgrims when a bus carrying three IEDs were defused on the way back. The IEDs were placed inside three pressure cookers and were remote controlled.
Apart from this there are many other cases of attacks on Amarnath pilgrims, which lead to huge decline in the number of devotees visiting the holy shrine.