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Longwood Swallet is a cave near Charterhouse, in the Carboniferous Limestone of the Mendip Hills, in Somerset, England. The cave is part of the Cheddar Complex SSSI and connected to August Hole. It is 1.65 km in length and reaches a depth of 175m.〔(【引用サイトリンク】 work=UK and Ireland Cave Lengths and Depths )〕 The cave was discovered in September 1944 by boys from Sidcot School. The picture shown is not Longwood Swallet, it is Longwood Valley Sink. Longwood Swallet's entrance is a lidded concrete block construction. A (non-free) picture of Longwood Swallet entrance is available (here ) The cave is locked and access is controlled by the (Charterhouse Caving Company ). There is a warning sign posted at the entrance to the cave about flooding. This has always been a problem, but is more pronounced due to the extraction of water from the spring at Charterhouse. When the pumps owned by Bristol Water stop this can cause a flood wave to travel down the stream and into the cave. == See also == * Caves of the Mendip Hills 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「Longwood Swallet」の詳細全文を読む スポンサード リンク
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