📷 Photos coming soon
Photo gallery
Photos of Émergence de Bons and the route between the sumps will be added here.
Photo gallery coming soon
🏛️ DepartmentLot (46)
📍 LocationLarroque-Toirac
📌 Cave GPS44°31′14.7″N 1°55′59.1″E ↗
🅿️ Parking GPSParking location not yet confirmed
↕ Max. depth±19 m
↔ Development2947 m
🗺️ TopoView survey ↓
Character of Émergence de Bons
The supplied survey shows a long and varied system with several sumps and dry or partly dry passages. The survey gives 2947 m of development, of which 1135 m is underwater. According to the survey, the western branch of S8 reaches approximately -19 m.
According to the dive report, S1 is short and leads into a large chamber with an attractive calcite bridge. To continue, the equipment has to be taken out of the water and moved several metres upward; a ladder was used for this.
Warning: the dive report mentions an elevated CO₂ concentration in the chamber after S1. Farther on, S2 is described as extremely silty, with a risk of a complete silt-out on the return. These are reported observations, not current measurements.
📷 Photos & video
🗺️ Topografie Émergence de Bons
The survey shows the developed profile, plan view and a detail of the entrance and S1.
Survey: relevés Frédéric Ausset, Medhi Dighouth, Ludovic Giordano, Nadir Lasson, Guillaume Tixier en Frank Vasseur. Report et dessin: Nadir Lasson.
Copyright: de topografie is historisch bronmateriaal. freijer.eu claimt geen auteursrecht op de oorspronkelijke topografische inhoud of tekening. Bron- en auteursvermelding is behouden.
🗺️ Location
Larroque-Toirac, Lot, France
📍 Open in Google Maps →ℹ️ Practical information
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ParkingOn the small field at the end of the track. ±1–3 cars.
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Walking distanceCurrently estimated at ±100–150 m via a narrow, muddy path uphill.
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AccessFollow the woodland path uphill; according to the report, after the first turn to the left it is approximately another 50 m to the cave.
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EquipmentRope recommended on the slippery access path. To continue beyond the chamber after S1, a ladder is practical. A headlamp is recommended.
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Special considerationsShort S1 into a large chamber; elevated CO₂ has been reported. Farther on, passages are extremely silty.
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PermissionStill to be confirmed; check the current access situation beforehand.
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DPVNot recommended.
📚 Sources & attribution
- Supplied GPS positions — locatie van de grot en parkeerplaats.
- Supplied survey — diepte, ontwikkeling en sifongegevens van Émergence de Bons.
- Dive report by Anton van Rosmalen — praktische toegang, klim, CO₂ en silt.
Practical information and GPS coordinates are based on supplied field information. Cave conditions, access and local arrangements may change; always check them before a dive.