复涌泉
Source de Landenouse
A walled resurgence pool on the north bank of the Lot about 1.75 km upstream of Cajarc, leading into a wide, shallow gallery that continues past 1,200 m to depths of about 90 m.
Landenouse rises in a masonry basin just below the D662, built long ago to hold water for two mills that no longer exist. In high water the basin overflows through a spillway; at low water its level can drop about 4 m because the spring no longer compensates for leaks.
From the bottom of the basin at about 3 m a vertical step leads to 6 m and a debris slope in a bedding plane descends to about 12 m, where a large horizontal gallery begins. The FFS fiche describes this gallery as 4 to 12 m wide and mostly 14 to 17 m deep, with a low point of 19 m, and calls it a large, clear sump that becomes slightly cloudy on the way out. The line was installed to 370 m at the time of the fiche.
Further in, earlier explorers reached 1,152 m at 60 m depth, and Jochen Hasenmayer reached 1,240 m and 90 m on 25 September 1980. The fiche also recalls that in 1970 two experienced cave divers died from bad air after surfacing beyond a sump in the nearby Cadrieu spring, about 1.5 km away.
环境
A broad bedding-plane gallery with a clay-sand and cobble floor, erosion scallops and dark manganese and iron deposits on the walls.
环境条件
The basin level depends on the season: it overflows in high water and drops about 4 m at low water.
典型范围来自已发表资料，不代表当前实际状况。
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 (9)
| 信息条目 | 状态 | 来源 |
|---|---|---|
| The spring emerges in a masonry basin built to feed two former mills; it overflows in high water and drops about 4 m at low water. | 已核实 | [1] |
| From the basin floor at -3 m a step leads to -6 m and a debris slope to -12 m, where the horizontal gallery starts. | 已核实 | [1] |
| The first gallery is 14 to 17 m deep with a low point of 19 m over about 350 m. | 已核实 | [1] |
| Jochen Hasenmayer reached 1,240 m from the entrance and 90 m depth on 25 September 1980; the fiche describes the gallery continuing to about -95 m beyond a low boulder choke. | 已核实 | [1] |
| In 1970 two experienced cave divers died from gas, probably from a lignite layer, after surfacing beyond a sump at the Cadrieu spring about 1.5 km away. | 已核实 | [1] |
| Parking has room for only two or three vehicles; from September 2010 divers must not park in front of the barn doors used by the SIVOM de Cajarc, and obstructing cars will be removed.Landowner remark dated 2010 on the fiche; no newer notice found. | 信息可能已过时 | [1] |
| Published at N 44°29'15" E 1°51'57" (FFS) and N 44.487593 E 1.865144 (The Cave To Be). | 已核实 | [1] [2] |
| Published at N 44°29'15" E 1°51'57". | 已核实 | [1] [2] |
| The sources consulted publish no qualification, permit or registration requirement set by a land manager or access body for this site.Absence of a published rule, not confirmation that none exists. | 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