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。
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.
在有关质地的调查中，研究人员通过给人们猜一个或是表面光滑，或是用砂纸包裹的谜语，来测试诸如“不舒服的一天”、“讲粗鲁的话”等比喻。
In the texture category, the researchers tested metaphors such as "having a rough day" and "using coarse language," by giving people a puzzle to solve that was either smooth or covered in sand paper.
通过对以光滑鱼为猎食的鱼鹰进行研究发现，它不象其它的食肉鸟类，它有四只同样长而非常有力的爪，并且最外边的一只是可以钩回和前后旋转。
Ospreys specialise in catching slippery fish. Unlike other birds-of-prey, they have four powerful toes of about equal length, while the outer one is reversible and can swivel backwards or forwards.
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