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List of caves in Bulgaria : ウィキペディア英語版 | List of caves in Bulgaria The list caves in Bulgaria, as of 2002, includes around 4,500 underground formations. The earliest written records about the caves in Bulgaria are found in the manuscripts of the 17th century Bulgarian National Revival figure and historian Petar Bogdan. The first Bulgarian speleological society was established in 1929. The caves in the country are inhabited by more than 700 invertebrate species and 32 of the 37 species of bats found in Europe. The longest caves in Bulgaria are Duhlata (17,600 m) and Orlova Chuka (13,437 m). The first show cave is Bacho Kiro, inaugurated in 1937. == Partial list of Bulgarian caves ==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「List of caves in Bulgaria」の詳細全文を読む
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