2Snake Island, Brazil

Brazilโ€™s Ilha da Queimada Grandeโ€”dubbedย Snake Islandโ€”is home to a dense population of one of the worldโ€™s deadliest snakes.

The golden lancehead viperโ€™s venom is so poisonous that it melts human flesh around the bite, and someย claimย thereโ€™s one snake per square meter in certain areas.