 |
| Russian | English |
| реперный знак | bench mark |
| реперный пласт песчаников | sandstone marker bed (a close-up of the sandstone marker bed in the above photo. ArcticFox) |
|
| Russian | English |
| реперный знак | bench mark |
| реперный пласт песчаников | sandstone marker bed (a close-up of the sandstone marker bed in the above photo. ArcticFox) |