1. Snake Island (Ilha da Queimada Grande) The snake island which is almost 92 miles away from the cost of São Paulo in Brazil has earned it's name for a reason. The amount of snakes on that island is so high, that the Brazilian navy has banned people from landing on the island. Only a few scientists are given permission to go on that island. It is estimated that there are about 1-5 snakes per square meter of the island and most of the snakes are unique species of pit viper, the golden lance-heads which are famous for their deadly venom. 2. The North Sentinel Island, Andaman and Nicobar Islands This isolated island which host a small tribal group of few hundred people is situated in the Andaman and Nicobar Islands. This small island has been stayed isolated for thousands of years and still remains the same due to the aggressive nature of the tribal people. They don't welcome any visitors on that island. All that you can receive as a welcome gift could probably be ...