NAPA, Calif. (AP) — Napa Valley’s seismically reinforced winery buildings generally held up to the largest earthquake to hit Northern California in a quarter-century, but the precious wine piled inside often did not.

In winery after winery, oak wine barrels stacked high and weighing more than a quarter-ton each came cascading down, renewing worries about a lightly regulated threat to safety in fault-riddled wine country.