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It definitely caused quite the hub-bub...there were several articles about it in newspapers if I remember correctly while reading about it.

Yeah, I mean, I don't know how I would feel at the time letting my lady do some crazy exploring such as this.. but hey, only live once!

Makes me wonder how much of that "hollow Earth" theory is true...

I tend to think not completely hollow but massive pockets of void in the rocks below. Sinkholes fascinate the hell out of me, because its like an uncharted cave complex potentially opening up!