The Duvall erratic (aka ‘Big Rock’)

Duvall's Big Rock. John Scurlock photo. Click to enlarge.

A new field trip is posted, directions to visit to ‘Big Rock’ just south of Duvall, Washington. The field trip is posted here in the ‘Glacial erratic field trip section of the Northwest Geology Field Trips website.

If you visit, see if you can tell what type of rock it is. I haven’t been there.

DT

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