(MercuryNews) - Across Napa and Sonoma, vintners finally were able to return this past weekend to fire-scarred Wine Country to see firsthand the fate of their wineries and vineyards.

On Monday, four more confirmed significant damage to their wineries, vineyards or wine stock. That brings the list of fire-damaged properties to 23 in Napa, Sonoma and Mendocino Counties, since fires started on Oct. 8.

Here’s a closer look at the wineries that were damaged or destroyed by the fires:

Ahh Winery: The winery building at Glen Ellen was completely destroyed, along wth its water system, reports owner Bruce Rector. “We are OK,” he says. “The good news is we have two years of inventory.” The boutique winery offers a large selection of pinot noir, and the Rectors are known as much for their organic food as for their wines.

Ancient Oak Cellars: The home vineyard at Siebert Ranch, in the Russian River Valley, experienced significant loss because of fire. “I’m very sad to report that our house, two big beautiful redwood barns, gorgeous tasting counter, etc, etc are gone,” the winery wrote on Facebook. The bottled wines and wines in barrel, however, were safe at other locations and the owners said Wednesday they believe the vines were spared. The Siebert Ranch vineyards grow grapes for the pinot noir; the zinfandel, cab sauvignon, merlot and cab franc are grown on other estates.

Backbone Vineyard & Winery: Sattie Clark said the small family winery in Redwood Valley burned to the ground in the Redwood fire, “along with all our wine made over the past five years.” Backbone specializes in Bordeaux varietals from its steeply terraced vineyard.