Những hố tròn bí hiểm ở Nga
Sự việc kỳ lạ liên tiếp xuất hiện kể từ cuối những năm 1980: giữa rừng già heo hút, người ta tìm thấy những cái hang sâu hoắm, thành hang nhắn thín và trơn tuột như thể hang lươn.
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