VALLECITO, Calif. - Deep under the wooded hills of Calaveras County - in the belly of one of the state's largest caves - I worm my way through a rocky slot that our cavern tour guide calls the "pancake."
It's a rectangular gap, 3 feet wide by about 18 inches tall. Imagine the space under a Volkswagen Beetle. To squeeze through, I lie on my back, raise my arms over my head and push through with my legs. My headlamp shoots a beam into a darkness so heavy I can almost feel it wrap around me. The air smells of mud.
Halfway through the opening - with cold, wet rocks pressing against my rib cage - panic begins to set in.
I need air. I need space. I need light.
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