Ilha da Queimada Grande

Ilha da Queimada Grande (a.k.a. Snake Island) is located 93 miles from São Paulo and is untouched by human developers because the island is densely populated with venomous snakes. Researchers estimate between one and five snakes live per square meter on the island. The Brazilian Navy has it quarantined and one biologist quoted “you are never more than 3 feet from death” on the island. The government of Brazil has banned anyone, except researchers, from landing there.