11 Underground Adventures In Northern California You Never Knew You Could Have

Calling all non-claustrophobic Northern Californians! There are a ton of underground activities in this region that vary from hard core spelunking to a mellow underground wine tour. Interested in learning more about what you can do underground in Northern California? Read on!

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Would you go underground in one of these below-the-surface locations? If so, which one would you choose? If you would rather adventure above the surface, how about trying out this experience? The Scenic Byway In Northern California You Have To Travel At Least Once.