Ilha da Queimada Grande, or Snake Island, near Sao Paulo, Brazil, is very dangerous. Thousands of venomous golden lancehead ...

Ilha da Queimada Grande, or Snake Island, is a dangerous place. Thousands of golden lancehead snakes live there. Their venom ...

Now the only visitors to Snake Island are a once-a-year visit by the Brazilian Navy to check on the lighthouse, and a very few select scientists that have a permit to study the snakes. They are ...

Snake Island is infested with an estimated 2,000 to 4,000 golden lancehead vipers, ... who stops by once a year to maintain the island's lighthouse, and groups of biologists who study the snakes.