湧出口
Pluragrotta – Plura resurgence pool
Pool and cavern zone (separate line): NGDF guidance [1] (NGDF says divers without cave training may dive the pool or the cavern zone with an experienced cave diver; the cavern zone has its own line.). 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。
The main diving entrance to Pluragrotta: a pool where the underground Plura river reappears near the farm Jordbru, about 200 m from the Plura Valley dive centre. A lined cavern zone leads into very cold, clear cave passage.
The Plura river resurges in a pool near the farm Jordbru in Plurdalen. A resurgence is a spring where an underground river returns to the surface; divers swim against the outflow into the cave. The pool and the first part of the cave form a cavern zone with its own guideline (a fixed line divers follow so they can find the way out).
An air chamber, called the Chapel by the local dive centre, lies about 450 m inside, and most of the route to it can be seen within roughly 30 m depth, according to NGDF. Deeper side passages and the deep run towards Steinugleflåget are reserved for experienced technical cave divers.
The Plura Valley dive centre sits about 200 m from the entrance with accommodation, a shop and gas fills.
環境
Cold river water from about 1.5 °C in winter to 7 °C in late autumn, usually very clear, in river passages with jumps (side lines) to side passages. Visibility can drop to a few metres during May snowmelt.
コンディション
Seasonal snowmelt in May reduces visibility to 2-3 m; late winter and early spring bring the clearest water (dive centre figures).
公表資料からの一般的な範囲であり、現在のコンディションではありません。
設備
Dive centre about 200 m from the entrance with accommodation (20 beds), shop, lounge, sauna and gas fills; guided packages include air, oxygen and nitrox, with helium charged separately.
他のエントランス（{n}） Pluragrotta–Steinugleflåget system
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 (10)
| 情報 | ステータス | 出典 |
|---|---|---|
| The river sinks at the Trollkjærka collapse and resurges in a pool about 200 m from the farm Jordbru; the dive centre is about 200 m from the entrance. | 確認済み | [1] |
| Most of the route to the air chamber, about 450 m in, can be seen within just over 30 m depth.NGDF Norwegian text gives about 450 m; the dive centre places the Chapel air chamber about 450 m into the mountain. | 確認済み | [1] [2] |
| Non-cave-trained divers may dive the pool or the cavern zone, which has its own line, with an experienced cave diver.Association guidance. | 確認済み | [1] |
| Water ranges from about 1.5 °C in winter to 7 °C in late summer and autumn.NGDF gives 3-6 °C. | 報告済み | [2] |
| Visibility is about 35 m most of the year, around 100 m in March-April and 2-3 m in May.Provider claim. | 報告済み | [2] |
| The police access ban on the Plura caves was lifted on 2014-03-31. | 報告済み | [4] |
| Guided packages include air, oxygen and nitrox, rental tanks and accommodation; helium is not included.Provider claim; no prices published. | 報告済み | [2] |
| Plura Sleep offers 20 beds year-round next to the cave entrance. | 報告済み | [3] |
| Divers without cave training may dive only the pool or the cavern zone, accompanied by an experienced cave diver.NGDF guidance, not a legal rule. | 確認済み | [1] |
| The Plura Valley dive centre beside the entrance is mapped at about 66.282 N, 14.732 E.From the regional tourism listing; area precision because the entrance is about 200 m from the centre. | 確認済み | [3] |
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