The Washington PostThe Washington Post

Beneath the surface, scientists find a record that could redefine our history of the planet

By Sarah Kaplan

20 Jun 2023 · 10 min read

informed Summary

  1. Crawford Lake in Ontario, Canada, has absorbed signs of change from the surface world for centuries, with its sediments preserving a record of over a thousand years of history.

MILTON, Ontario - Locals used to say that Crawford Lake was bottomless. Its waters ran deeper than people could reach. Anything that dropped into the basin, it seemed, would fall till the end of time.

Yet when scientists finally looked into the lake's murky depths, they found not a void, but a mirror.

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