了孤立山头这种独特的地理奇观!
那是玄武岩的柱状节理,岩石四周被侵蚀后, 只留下了芯, 形成
本帖于 2010-02-05 16:47:39 时间, 由普通用户 --1234567- 编辑
了孤立山头这种独特的地理奇观!
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