Blautopf
The deep-blue, funnel-shaped karst spring in Blaubeuren that is the outlet of the Blauhöhle system. A popular sightseeing spot; diving is reserved for the permitted research group.
The Blautopf is a roughly 22 m deep, funnel-shaped spring pool in the centre of Blaubeuren. Its striking blue colour comes from sunlight: the deep water absorbs the other colours, and reflections off fine calcium carbonate particles intensify the blue. Water leaves the pool as the Blau river.
The pool is the underwater entrance to the Blautopfhöhle, part of the Blauhöhle system. Divers first reached the bottom in 1957, and the cave beyond has been explored by research divers since; today diving is carried out by ARGE Blautopf under a permit held since 1997, and the cave is not open to visitors.
The grounds around the spring have been under renovation since August 2024, with access to view the Blautopf maintained during the works.
環境
Cold karst spring water (about 9 °C) flowing out of a funnel-shaped pool; discharge and clarity vary strongly with rainfall.
コンディション
Mean outflow about 2,300 L/s, over 30,000 L/s after heavy rain (town 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
Town-centre location; tourist information at Kirchplatz 10, Blaubeuren.
このページのすべての情報とその出典 (7)
| 情報 | ステータス | 出典 |
|---|---|---|
| The Blautopf is a funnel-shaped karst spring about 22 m deep. | 確認済み | [4] [1] |
| The water is about 9 °C year-round. | 確認済み | [4] |
| Mean discharge is about 2,300 L/s, rising above 30,000 L/s after heavy rain. | 確認済み | [4] |
| The cave system cannot currently be entered by visitors; ARGE Blautopf has held a diving permit since 1997.Permit issuer not named. | 確認済み | [1] [3] |
| The Blautopf area has been under renovation since August 2024, with access to the Blautopf maintained. | 確認済み | [2] |
| The blue colour results from sunlight: other colours are absorbed in the deep water and reflections off calcium carbonate particles intensify the blue. | 確認済み | [4] |
| Diving is limited to the research group ARGE Blautopf, which has held a diving permit since 1997. | 確認済み | [3] [1] |
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