Welcome to My Nightmares

Blissfully and unassumingly researching islands to visit off the coast of Brazil last week, I stumbled upon Ilha de Queimada Grande, nicknamed Snake Island. The island, off the coast of the São Paolo state, has the world's largest population of venomous Golden Lancehead pit vipers, about one to five per square meter.

ONE TO FIVE SNAKES PER SQUARE METER. Plus, the snakes are two meters long and breed year-round. They feed on migratory birds and have no natural predators (or human ones, because let's be real).

The island even made it on Atlas Obscura (awesome website, by the way, it finds and presents weird stuff from all over the world) which provides readers with this comforting anecdote:
Locals in the coastal towns near Queimada Grande love to recount grisly tales of death on the island. In one, a fisherman unwittingly wanders onto the island to pick bananas. Naturally, he is bitten. He manages to return to his boat, where he promptly succumbs to the snake's venom. He is found some time later on the boat deck in a great pool of blood.

GREAT. Apparently, the island's only permanent human inhabitants were a lighthouse keeper and his family. That is, until a handful of snakes entered through a window and attacked the man, his wife, and their three children. In a desperate attempt to escape, they fled towards their boat, but they were bitten by snakes on branches overhead because, oh yeah, the snakes slither on the ground and in the trees.

Luckily, I can't have too much fear of naively stumbling here on some tropical boat ride: the Brazilian Navy currently bans any entrance to the island without a permit. I will not be applying for one.