I've always been curious about the pit of venomous snakes. We only have one venomous snake in the UK - the common adder. It's bite is nasty, but very rarely fat

I've always been curious about the pit of venomous snakes. We only have one venomous snake in the UK - the common adder. It's bite is nasty, but very rarely fatal. I wonder if the story is made up, based on foreign tales of poisonous snakes, or perhaps they used imported snakes.