Ilha da Queimada Grande, nicknamed Snake Island, is a 430,000-square-metre (43-hectare) island off the coast of the state of São Paulo, Brazil. It is home to an endemic species of Bothrops, the Golden Lancehead Viper (Bothrops insularis), which is one of the most venomous snakes in the world. Much about its venom is disputed, as no cases of humans having been bit have been confirmed.