洞穴入口
Steinugleflåget
A dry cave on the side of a large collapse above Plurdalen whose flooded pools, about 100 m below the entrance, form the upper end of Pluragrotta's deep section. Reaching the water involves steep, loose dry caving; this is an expedition site, not a normal dive.
Steinugleflåget opens at the side of a large collapse doline on the hillside above Plurdalen. A steep dry cave, with a tight first section and then large boulder halls, descends roughly 100 m to the flooded pools where diving starts. A Finnish team that dived here in August 2010 needed two days to carry two rebreathers and bailout cylinders down and two days to bring them out, and described loose rock as the main hazard above water.
Underwater, the pools lead to large, sandy-floored passages; the 2010 team found areas descending to about 70 m. NGDF describes Steinugleflåget as the upper point of the Plura deep run, giving a second entrance to Pluragrotta through a section reaching about 130 m.
环境
Clear water around 6 °C (August 2010 observation), sandy floors that silt easily, scalloped rock, and a cold dry cave (about +3 °C air) above the water.
环境条件
Only a single summer observation (+6 °C, August 2010) is published. Gear transport through the dry cave is the main logistical challenge.
典型范围来自已发表资料，不代表当前实际状况。
通往该地点的其他入口 Pluragrotta–Steinugleflåget system
仅供方位参考，不可用于导航。空心圆点为大致位置。
本页所有信息及其来源 (6)
| 信息条目 | 状态 | 来源 |
|---|---|---|
| The diving pools lie about 100 m below the dry-cave entrance, which opens at the side of a large collapse.Trip report from 2010. | 已报告 | [1] |
| Passages from the Steinugleflåget pools descend to about 70 m in the areas the 2010 team dived.2010 observation; the deeper connecting section to Pluragrotta reaches about 130 m according to NGDF. | 信息可能已过时 | [1] |
| Water was +6 °C and air inside the mountain +3 °C in August 2010.Single 2010 observation. | 信息可能已过时 | [1] |
| Steinugleflåget is the upper end of the Plura deep run and a second entrance to Pluragrotta. | 已核实 | [2] |
| The 2010 team began the trip on the day they received an acceptance, implying permission was required.Who grants permission is not stated. | 已报告 | [1] |
| No requirements are published; the 2010 team mentions receiving an acceptance before diving. | 已报告 | [1] |
已核实：来自我们直接查阅的官方或主要来源。已报告：仅来自二手来源。来源存在冲突：注释中列出两种版本。可能已过时：我们找到的最新来源已有一定年代。
由我们根据上述来源以自己的文字整理撰写。 提交更正