North Sentinel Island
North Sentinel Island is an island in the association domain in Andaman and Nicobar Island in the Bay of Bengal. It's home to Sentenelese, who have ceaselessly and fiercely dismissed any sort of contact from the external world. The Senteneles have assaulted each boat or pontoon moving toward North Sentinel Island. Indian Government has prohibited any sort of visit to this island as Sentenelese don't need any contact with the external world. This is the most perilous spot in India as Sentenelese have murdered numerous individuals who visited this island and assaulted even helicopters or automatons hovering over this island.
Naxalite influenced territories or Red Corridor
The Red Corridor is naxalite influenced territories which incorporates portions of Chhattisgarh, Jharkhand, Madhya Pradesh, Andhra pradesh, Bihar, Maharashtra, Odisha, Telangana, and West Bengal. Around 90 regions are influenced from the above states with Naxalite and Maoist Insurgency. It is assessed that in excess of 13,000 individuals have been murdered since 1996 in various Naxalite-Maoist attacks.(Source Wikipedia)
Voyaging or living in these territories is perilous.