Nacedero de Franzisiturri
Survey reports
| Length | Max depth | Entrances | Source | Date |
|---|---|---|---|---|
| 589 m | 85 m | Unknown | Grandes Cavidades Submarinas de España Tertiary / aggregate source Provided by: OTXOLA Grupo de Espeleología 2016 | Unknown |
| Length | Max depth | Entrances | Source | Date |
|---|---|---|---|---|
| 589 m | 85 m | Unknown | Grandes Cavidades Submarinas de España Tertiary / aggregate source Provided by: OTXOLA Grupo de Espeleología 2016 | Unknown |