洞穴系统
Font del Truffe
The deepest sumps listed on the FFS fiche (S11 and S12) reach 30 m.
A resurgence near Lacave in the Ouysse valley whose cave is a long chain of mostly shallow sumps separated by air-filled passages. Explorers have passed at least thirteen sumps, with British divers reaching sump 14 in 2012.
Font del Truffe rises beside a ford at the end of a 3 km track from the D247 near the Ouysse bridge at Lacave. The way in is at the bottom of a dark pool, between the roof and a large boulder, into a tiny chamber and then a very low passage that opens into the first sump.
The cave is not deep but it is long and committing. The FFS fiche lists thirteen sumps, most between 6 and 15 m deep and between 20 and 270 m long, with the eleventh and twelfth reaching 30 m. Air-filled galleries and a lake separate them, and a side route from sump 1 leads through a clay gallery and an 8 m shaft to a fossil passage that rejoins sump 5.
Visibility is usually described as excellent. When the water is high enough divers can pass from sump 1 to sump 2 without surfacing.
The cave was pushed in stages: Brive divers had explored 680 m by 1975, Daniel Andrès and Bertrand Léger added more than 500 m beyond sump 4 that year, and a series of French teams reached sump 11 in 1979-1980 and sump 12 in 1994. Rick Stanton and John Volanthen found sump 13 in 2007, and in December 2012 Volanthen, Martin Groves and Rupert Skorupka reached sump 14.
水况、水流与洪水
A resurgence with a series of sumps and air-filled passages; whether the first two sumps connect underwater depends on the water level.
为何重要
A classic long multi-sump cave of the Lot, explored over more than four decades by French and British cave divers.
环境条件
Visibility is usually excellent according to the FFS fiche; at sufficient water level the first two sumps connect underwater.
典型范围来自已发表资料，不代表当前实际状况。
测量与探索历史
| 1975 | Daniel Andrès and Bertrand Léger explore more than 500 m of passage beyond sump 4, after Brive divers had reached 680 m. [1] |
| 1979-09 | A French team progresses to sump 11. [1] |
| 1994-10-30 | Bernard Gauche advances 130 m into sump 12. [1] |
| 2007-02-03 | Rick Stanton and John Volanthen climb a narrow fissure in sump 12 and find sump 13. [1] |
| 2012-12-28 | John Volanthen, Martin Groves and Rupert Skorupka explore to sump 14. [1] |
入口与潜点
One entrance, the resurgence pool beside a ford, reached by a private access track signed 'interdit sauf riverains' (no entry except residents).
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 (7)
| 信息条目 | 状态 | 来源 |
|---|---|---|
| The fiche lists thirteen sumps: S1 160 m/-13, S2 130 m/-12, S3 85 m/-12, S4 100 m/-7, S5 200 m/-11, S6 170 m/-15, S7 60 m/-6, S8 270 m/-8, S9 20 m/-6, S10 255 m/-15, S11 265 m/-30, S12 260 m/-30, S13 90 m/-15.The narrative describes sump 2 as 180 m while the table gives 130 m. | 已核实 | [1] |
| The deepest listed sumps, S11 and S12, reach 30 m. | 已核实 | [1] |
| John Volanthen, Martin Groves and Rupert Skorupka explored to sump 14 on 28 December 2012.The fiche spells the third name Skroupka. | 已核实 | [1] |
| Visibility is usually excellent and at sufficient water level divers can pass from sump 1 to sump 2 without leaving the water. | 已核实 | [1] |
| The approach follows a track signed 'interdit sauf riverains' for 3 km, under a farm porch, to a ford beside the source. | 已核实 | [1] |
| Area-level position near N 44.83 E 1.55; a provider publishes the exact point (N 44.826948 E 1.550617). | 已核实 | [2] |
| Area-level position near N 44.83 E 1.55. | 已核实 | [2] |
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