Earth’s two-million year rain.
https://medium.com/lessons-from-history/that-time-it-rained-for-two-million-years-d885f1af850a
Legend tells of a Musqueam (Indian) prophet who foretold a large flood.
“He went out and told all the people, but they didn’t believe him,” says Mohs. “They said there’s always been flooding here.”
But when the water rose, the people fled their village and took shelter in a cave on Sumas Mountain, in what is now Abbotsford. The water came up 90 metres.
Mohs says the story can be traced back 11,500 years.
“But those days are gone. In the days of the really high water, the people were free to move to higher ground. They can’t do that now. First Nations communities are like municipalities in a way. They’re dependent on flood control.”
BTW it looks like a lot of stuff happened about 11,500 years ago ...