Snake Island: The isle writhing with vipers where only Brazilian military and scientists are allowed
![Snake Island: The isle writhing with vipers where only Brazilian military and scientists are allowed](https://cdn.mos.cms.futurecdn.net/xMQSpP56aRFR23pySnecRB.jpg)
Snake Island was isolated from the Brazilian mainland at the end of the last ice age, trapping Earth's only known population of highly venomous golden lancehead pit vipers on a rock in the Atlantic.