Triangulation Pillar S6381: Warren Farm 

Location
Grid reference: SR 93196 97645.
Landranger 158: Tenby & Pembroke.
Waypoint: TP0008.
Neighbouring Triangulation Pillars
| S6377 | Green Hill 3.88km to the north. |
| S6382 | Hundleton 4.22km to the northeast. |
| S6307 | Stackpole 6.73km to the east. |
| S6309 | Mutton Hill 8.63km to the northeast. |
| S6386 | Fort Scoveston 9.06km to the north. |
Third Geodetic Levelling, England & Wales (1950-68)
This triangulation pillar was used during the Third geodetic levelling, England & Wales. It was included on the Haverfordwest to Carmarthen levelling line.