大烟山田纳西弗吉尼亚之旅(一)卢瑞溶洞 Luray Caverns

October 04, 2016  •  Leave a Comment
卢瑞溶洞(Luray Caverns)位于美国弗吉尼亚州的Shenandoah Valley,是美东地区最大的钟乳石溶洞,于4亿年前形成,发现于1878年。当时有三个美国人发现该地上一银币尺寸的小孔,有冷气从小孔冒出,花了5个多钟头,挖了洞,下洞探险,惊诧于洞内千奇百怪的钟乳石。岩洞占地64英亩,洞内有一条一英里半长的参观步道,四季恒温,华氏54度(约摄氏12度)。

洞穴内满布数万年至数十万年甚至百万年才能形成的各类钟乳石,大部份的钟乳石还都在继续生长,每一个立方英寸至少需要120年的时间才能生成。在碳酸盐岩沉层分布区经长期风化剥蚀和地表水的切割溶蚀,日积月累形成了典型的岩溶地貌形态。沉淀物由上而下结成为冰柱状垂挂在天花板的称为钟乳石,像从地面冒出头圆锥状如竹笋般的称为石笋,两者不断生长到上下两端相接后逐渐成为石柱。更有千姿百态的石花、石枝、石塔、石盾、石瀑布等钟乳石造型。

洞中步移景换,使人目不暇接。溶洞中最大的水体是梦幻湖(Dream Lake) ,无波无痕像镜一样完美倒映着上方的一簇簇的长短各异的钟乳石,奇幻空间令人赞叹。洞里巨人厅(Giants Hall)还有世界上最大且独一无二的-钟乳石管风琴(Stalacpipe Organ),整个溶洞就是管风琴的本体,环绕的钟乳石阵形,覆盖面积达3英亩,组成巨大的Stalacpipe管风琴。当钟乳石被敲击时会发出类似管风琴的乐音,绝对独特的美妙音调被这个独一无二的乐器创造出来,令人难以忘怀。

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