| Name | Ristna F-331 borehole |
| Number | F-331 |
| Type | borehole (section) |
| Country | Estonia |
| Parish | Padise |
| Settlement | Keibu |
| Elevation | 6.50 |
| Coordinates | 59.268322, 23.757938 |
| X | 6570030 |
| Y | 486196 |
| Coord. agent | Eesti Geoloogiakeskus (EGK) |
| Location remarks | Harju-Risti-Nõva mnt Ristna ristmikult ~2.3km põhja-loodes, ida pool maanteed. Ristna sadamast ca 700m ida-kagus |
| Strat. top | Keila Stage |
| Strat. base | Proterozoic |
| Remarks | Puuritud 1987 või varem, K. Suuroja; EGF 3038 |
| Estonian Land Board ID | 4389 |
| Date changed | 2022-11-21 |
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