Viper Island is a historic island of Andaman. Its is very significant place for the tourists. To reach viper island you have to go by a boat which is 20 minutes from the Phoenix Bay jetty. After you reaching to the island you will see the momentous double storied prison beside the pier head. 

Solitary cells, lock-ups, stocks and whipping stands characterized the Viper Jail. Women were also held. The conditions at the jail were such that the place got the notorious name, "Viper Chain Gang Jail." The warden of this jail often changed but inmates used to call the warden "The black mamba".

The Jail has secured a permanent place in the history of the freedom struggle as it was here that Sher Ali, a Pashtun from Peshawar, was hanged after he assassinated Lord Mayo.