Ada: The morning of the twenty-seventh brought four colossal blasts - around half past five, then quarter to seven, and the largest of all at two minutes past ten.
Theo: And that ten-o'clock one is the famous one, right?
Ada: It's the loudest sound in recorded human history. It was heard at Rodrigues Island, near four thousand eight hundred kilometres away - about three thousand miles - where people thought they were hearing distant gunfire.
Theo: Three thousand miles. That's like something in London being heard in Baghdad.
Ada: It was audible across roughly a thirteenth of the planet's surface. And the pressure wave in the air circled the whole Earth as many as seven times over five days, registering on barometers everywhere.
Theo: So what actually killed the thirty-six thousand people? The blast?
Ada: No - and this matters. Most died from the tsunamis, walls of water up to thirty metres high. The Dutch counted thirty-six thousand four hundred and seventeen. Two-thirds of the island itself collapsed into an undersea caldera.
Theo: And the whole world knew almost at once, didn't it? Not months later.
Ada: That's what made it modern. The telegraph carried it out near real time - arguably the first global natural disaster reported as it unfolded. And for months after, sunsets everywhere blazed an unearthly red.
Theo: People say that red sky is behind Munch's Scream.
Ada: They do, and it's a lovely idea - but honestly, it's speculative and still debated. I wouldn't hang the painting on it.
Theo: So think about the arc of this. It began as a boat trip you paid twenty-five guilders to see.
Ada: That's the whole story, really. A familiar smoking island, a spectacle people had stopped fearing - and then a day and a half where a curiosity became the loudest, deadliest thing the modern world had witnessed, remembered mostly through a few sailors shovelling mud in the dark.
Theo: What stays with me is how ordinary it felt right up until it wasn't. Familiarity dulled the alarm, and that's such a human thing.
Ada: It is. And if a detail here made you want to stop and ask us something, you can - just interrupt any episode and put the question to us.
Theo: And there's a whole other story in what rose from that caldera - a new island, Anak Krakatau, the child of Krakatoa, breaking the surface in the nineteen-twenties. If you're curious, it's one tap away.
Ada: This was Historai - where history answers back.