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Everett, Wash. — Workers digging an underground garage for a new hotel in Everett, Washington, recently struck something big about 30 feet below the surface.

This week they uncovered it — a boulder that’s thousands of years old and bigger than an SUV, weighing an estimated 150 tons.

A geotechnical engineer who was called out to examine it, Kurt Merriman, told The Daily Herald it’s a glacial erratic — a giant rock left behind by a glacier maybe 18,000 years ago.

The site superintendent for the Halvorson Construction Group, Ben Hansen, says it may give the boulder to the city to try to find it a home.

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