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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Pen Park Hole ： ウィキペディア英語版 Pen Park Hole Pen Park Hole is a large cavern situated underground, at the edge of Filton Golf Course. The cavern was discovered accidentally in the 17th Century. The first descent into the hole was by Captain Sturmy on the second of July, in the year 1669. The entrance is adjacent to the Southmead and Brentry housing estates of north Bristol. Access is tightly controlled by Bristol City Council. On 17 March 1775 Reverend Thomas Newnam of Redcliffe Church fell to his death while attempting plumb the depth when the tree branch onto which he was holding broke. His body was recovered 17 days later. The cave consists of some short climbs, and a few chambers, the last of which is a very tall rift chamber with a lake that changes height by as much as 20 metres. Side passages contain impressive dogtooth spar. The cave was formed by rising geothermal water (and is one of the best examples of a hydrothermal cave in the UK or Ireland), making it far older than other caves in the area, at around 190 million years old. ==References== 〔 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「Pen Park Hole」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.