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TripAdvisor
We had an absolutely perfect day with our tour guide - Rogin Luo - who took us for a hike along The Great Wall! Didn't know what to expect and were thrilled to have him as our guide. Very imformative, knowledgable and fun! We go to experience a part of The Great Wall that was unrestored and see all its natural beauty. Got a long history lesson along the way!

After the hike, we all went to lunch at a small place at the bottom of the hill. Located in a house, we ate lunch in the proprietors bedroom! What a hoot! Rogin is the Best of the Best! This tour company delivered for us and we are extremely grateful.

Karenkatz,
Westborough, Massachusetts
Reviews onTour-Beijing.Com
台湾澎湖海底发现奇景 玄武岩如同微笑城墙
 
台海网1月4日讯 在澎湖北方海域的大硗屿海底,有一处开口朝西北、呈微笑状的柱状玄武岩,长度达二百米,高约十米,每枝石柱的直径约一米,节理明显宛如“海底城墙”。

  据台媒报道,发现它的台湾“中央研究院”生物多样性中心研究员郑明修说,这片海域以前没有任何研究调查的纪录,海底柱状玄武岩应是首次被发现。

  这处壮观海底奇景的发现,纯属意外。


郑明修原本是为调查去年初寒害对澎湖海域生态的影响,由于北方海域受损较严重,五月时,特别前往澎湖极北的大硗屿附近潜水调查。

这里的水流湍急,时常有船只触礁发生船难,上面有一座无人灯塔,但平时除了渔民,潜水的人不多。

  郑明修率领研究团队在大硗北方海底调查珊瑚礁、鱼群的生长状况,当氧气瓶快要用完,准备往南游回船上时,“一回头,赫然看到前方黑压压的一片”。研究团队成员,资深潜水教练郭道仁看到后,心中的第一句话是:“我的妈呀!”他原本在距水底约一米的地方调查,形容“抬头看,就像看到一片城墙”,遮挡了原本应该是深蓝的海水颜色。

  郑明修表示,这座柱状玄武岩的顶部离水面约三米,可以看到玄武岩特殊的五角和六角型柱状节理,节理上有圆管星珊瑚群体、藤壶、牡蛎蛤附生,缝隙内有海胆、黑蝶贝、水螅虫附着。

  郑明修说,他的专长虽不是地质,但潜入海中就喜欢“东看、西看、乱看”,才会有这次意外的发现。他也感慨许多学生自我设限,“到了海中,研究珊瑚的只看珊瑚,研究鱼的只看鱼”。

  台大地理系教授林俊全说,玄武岩地形在陆上和水面下都不少。玄武岩在水中通常是“枕状熔岩”,当熔岩流在水底喷发后,急速冷却成椭圆或圆球状。但柱状玄武岩若规模够“壮观”,往往还是会成为著名的景点。

来源:台海网
 


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