シンクホール
The Shaft
Basic Cave: CDAA site rating [1] (Rating as listed in the CDAA site directory.). これらのカテゴリーは各認定スキームが定めたものであり、そのサイトで必要とされるトレーニングを示しています。
A huge water-filled chamber under a paddock near Allendale East, entered through a roughly one-metre hole. Closed after four deaths in 1973; now dived by CDAA members only, through approved guides.
The Shaft is a private sinkhole whose only opening is a small hole in a paddock. Divers and equipment are lowered separately about seven metres to the water surface, then descend into an oval chamber that a 2017 press report puts at about 140 m long. A rock pile tops out around 36 m, and two tunnels lead deeper: one to the north-west to about 80 m, and an eastern tunnel, past restrictions near 57 m, to a rock pile at 124 m.
The site was popular with divers in the late 1960s and early 1970s but closed in 1973 after four divers died there. The CDAA says public reaction to those deaths was the main reason the association was founded to regulate cave diving. A CDAA Research Group mapping project completed in 1984 led to renewed access, organised by a group of guides who set schedules and standards for qualified members.
環境
One very large, clear freshwater chamber below a dry entry shaft, with a rock pile and two deep tunnels.
方向確認用であり、ナビゲーション用ではありません。白抜きのドットはおおよその位置を示しています。
このページのすべての情報とその出典 (11)
| 情報 | ステータス | 出典 |
|---|---|---|
| The CDAA site directory lists The Shaft (5L158) as Basic Cave on private land. | 確認済み | [1] |
| An Australian Speleological Federation team explored the eastern tunnel in 2002-03 to a rock pile at a maximum depth of 124 m.Press feature quoting a member of the 2002-03 team; no published survey was opened. | 報告済み | [4] |
| The roughly one-metre entrance hole opens into a dry chamber that drops about seven metres to the water surface. | 報告済み | [4] |
| The main chamber spans about 140 m, a rock pile begins around 36 m, and a north-western tunnel reaches about 80 m.2017 press figures. | 報告済み | [4] |
| The Shaft was closed in 1973 after four divers died there, and public reaction was the main reason the CDAA was formed. | 確認済み | [2] [3] |
| A CDAA Research Group mapping project was completed in 1984 after lengthy negotiations with the owners.The 2017 press report says the 1984 project used 73 mapping and photographic dives. | 確認済み | [2] [4] |
| The landowner requires access via approved guides who are CDAA members. | 確認済み | [2] [3] |
| A fee is payable directly to the guide on the day of the dive.Amount not published. | 確認済み | [2] |
| The site is entered by wire rope ladder or rope access, decided by the site access guide on the day. | 確認済み | [2] |
| Coordinates are the Allendale East locality centre, not the entrance.Private site; entrance location withheld. | 確認済み | [5] |
| Coordinates are the Allendale East locality centre, not the entrance.Private site; entrance location withheld. | 確認済み | [5] |
確認済み：直接開いた公式または一次情報源による記載。報告ベース：二次情報源のみによるもの。情報が競合：注釈に両方のバージョンを記載。最新情報でない可能性あり：確認できた最新の情報源が古い。
上記のソースをもとに、独自の言葉でまとめています。 修正を報告する