Cave Underground River Potholing Limestone Doubs
rocks geology cave limestone potholing doubs underground river nature underground
| Date | 2017:03:25 10:38:30 |
| exif:ExifOffset | 99 |
| Exposure | 1/1 |
| Flash | 16, 0 |
| F number | 11/1 |
| FocalLength | 24/1 |
| ISO | 400, 0 |
| Manufacturer | NIKON CORPORATION |
| Model | NIKON D750 |