Meet the Easterdays – ranching royalty rooted in the Columbia Basin in southeast Washington state. But behind the well-known family name hides a dark secret, concealed in spreadsheets and bum invoices, that’s eating away at their vast empire.

Correction, 4:25 p.m., 2/27/2023: An earlier version of this story misstated when the Ice Age megafloods occurred. Most of the Missoula floods happened between 15,000 to 20,000 years ago, and some may have occurred as long as a million years ago.

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