1- Snake Island, Brazil
This island is home to a massive collection of the world's deadliest snakes. The venom of the "golden spearhead snake" is so dangerous that it melts human flesh around the sting area.
Some claim that there is a snake in every square meter in certain areas. For safety reasons, the Brazilian government does not allow visitors on this island, and it is necessary to have a doctor on the next team to conduct research visits.
