Caves and potholes of Essonne

The catalogue of Essonne lists 9 caves, including 9 caves. The longest is Grotte aux Tessons (186 m).

9 caves

562 m total length

4m max depth

Length adds each cave once (a system counts once), and depth is that of the deepest cave, canyons excluded. Without known lithology: 9.

Data as of October 19, 2026

The 20 longest

The 20 longest
#	Cave	Location	Length
1	Grotte aux Tessons	Milly-la-Forêt	186 m
2	Grotte ou caverne de la Souris	Milly-la-Forêt	125 m
3	Grotte de l'Est	Milly-la-Forêt	99 m
4	Grotte de l'Hôpital	Abbéville-la-Rivière	48 m
5	Grotte Secrète n°2	Milly-la-Forêt	28 m
6	Grotte des Bruyères n°7	Milly-la-Forêt	27 m
7	Grotte des Bruyères n°8	Milly-la-Forêt	18 m
8	Petite grotte de Coquibu n°5	Milly-la-Forêt	16 m
9	Grotte des Bruyères n°9	Milly-la-Forêt	15 m

Full ranking

The 20 deepest

The 20 deepest
#	Cave	Location	Depth
1	Grotte aux Tessons	Milly-la-Forêt	4 m
2	Grotte de l'Est	Milly-la-Forêt	4 m
3	Grotte de l'Hôpital	Abbéville-la-Rivière	3 m
4	Grotte des Bruyères n°7	Milly-la-Forêt	3 m
5	Grotte ou caverne de la Souris	Milly-la-Forêt	3 m
6	Grotte Secrète n°2	Milly-la-Forêt	3 m
7	Grotte des Bruyères n°8	Milly-la-Forêt	2 m
8	Grotte des Bruyères n°9	Milly-la-Forêt	2 m
9	Petite grotte de Coquibu n°5	Milly-la-Forêt	2 m

Full ranking

Municipalities

Milly-la-Forêt

8 caves

514 m

Abbéville-la-Rivière

1 cave

48 m

The figures of these places do not add up to the total: a cave can be in more than one place, or in none when its location has no lower level.

Contains information from Grottocenter (Wikicaves), grottocenter.org, made available under the Open Database License (ODbL 1.0, https://opendatacommons.org/licenses/odbl/1-0/), modified. · The derived data is available on request under the ODbL: [email protected]