There is an island that is so densely populated by poisonous snakes, in Brazil. Because of this, people aren't allowed to visit.
Ilha da Queimada Grande, also known as Snake Island. About 25 miles off the coast of Brazil, there is an island where no local would ever dare tread. Legend has it that the last fisherman who strayed too close to its shores was found days later adrift in his boat, lifeless in a pool of blood.
The mysterious island is known as Ilha da Queimada Grande, and it is in fact so dangerous to set foot there that Brazil has made it illegal for anyone to visit. The danger on the island comes in the form of the golden lancehead snakes – a species of pit viper and one of the deadliest serpents in the world.
The lanceheads can grow to be over a foot-and-a-half long and it’s estimated that there are between 2,000 and 4,000 snakes on the island, which unsurprisingly is known as Snake Island. The lanceheads are so venomous that a human bitten by one could be dead within an hour.
Snake Island is uninhabited now, but people used to live there for a short period up to until the late 1920s when, according to legend, the local lighthouse keeper and his family were killed by vipers that slithered in through the windows. Today, the navy periodically visits the lighthouse for upkeep and makes sure no adventurers are wandering too close to the island.