Underground Tunnel to the Sunny Jim Cave in La Jolla, California
/La Jolla, California is widely known for the "Seven Caves" and most visitors go inside the caves through kayaking tours, but there's also another way you can get to these caves: through a tunnel from inside a gift shop! Instead of viewing the caves out in the open waters, you can view it from another perspective at Sunny Jim's Cave. It is very reasonably priced at $5 and completely accessible by foot.
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