| Name | Erra F-190 borehole |
| Number | F-190 |
| Type | borehole (section) |
| Country | Estonia |
| Parish | Sonda |
| Settlement | Koljala |
| Elevation | 45.00 |
| Coordinates | 59.382015, 26.951621 |
| X | 6586361 |
| Y | 667710 |
| Coord. agent | Eesti Geoloogiakeskus (EGK) |
| Location remarks | Kiviõli-Lüganuse mnt Erra teeristist ca 2,2 km loodes (Koljala suunas) |
| Strat. top | Kõrgekallas Formation |
| Strat. base | Proterozoic |
| Remarks | Keerup, O. Süvakaardistamine 1975 (või varem); EGF 3476 |
| Estonian Land Board ID | 6099 |
| Date changed | 2022-11-21 |
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