Royer
Caves mentioning the terme "royer"
| Name | Location | Length (m) | Depth (m) |
|---|---|---|---|
| Grande Grotte (La) | Yonne - FR - France | 1252 | 13 |
| Gueldaman (Grottes de) | Daïra Akbou - DZ - Al-Jazā'ir |
| Name | Location | Length (m) | Depth (m) |
|---|---|---|---|
| Grande Grotte (La) | Yonne - FR - France | 1252 | 13 |
| Gueldaman (Grottes de) | Daïra Akbou - DZ - Al-Jazā'ir |