Adventurous visitors can opt for several "off-trail" Tours guided by park rangers through narrow passage ways, across slick flow stone and down ropes and ladders.

爱探险游的客可以选择几条“离步道”路线，由公园管理员带领下通过狭窄的入口，借用绳索和梯子穿过光滑流石到达溶洞。拍摄于2010年12月18日。

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The caving crew descends through tight passages hundreds of feet beneath the Earth's surface, guided by the gust of air that marks the cave's primary passage.

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