A 6.0 earthquake rumbled through the Bay Area Sunday morning, and wine makers bore some of the worst damage, with precious bottles flying off shelves. But the real question in evaluating the damage is not in smashed glass, but the wood barrels used to store and age wine.

Barrels were tossed off storage pallets and out of their sometimes high stacks, to wash up in piles as seen above. "It’s going to be incredibly difficult and dangerous to disentangle those barrels. They weigh 900 pounds each," said one winemaker quoted in the LA Times.

Read more: Napa earthquake tosses wine barrels and bottles into piles from The Los Angeles Times