If you’ve ever found an arrowhead in your backyard, you know that our region is rich with ancient cultures, buried treasures and perhaps unknown territories still to be discovered. In that spirit, the Napa Valley Museum presents a new quarterly environmental series, “Explore Napa Valley,” and debuts the educational endeavor this weekend with their adult program “Dig It!” Join archaeology professor Jessica Penman as she conducts a simulated dig, complete with tools and techniques on excavating, photographing and classifying artifacts found under our feet. “Dig It!” breaks new ground on Saturday, Nov. 22, at the Napa Valley Museum, 55 Presidents Circle, Yountville. 10am. $10. 707.944.0500.