Triangulation Pillar S2558: East Marsh 

Location
Grid reference: TA 13949 24226.
Landranger 107: Kingston upon Hull, Beverley & Driffield.
Landranger 113: Grimsby, Louth & Market Rasen.
Waypoint: TP2991.
Neighbouring Triangulation Pillars
| S2540 | Paull Holme 4.42km to the east. |
| S5005 | Paull Holme (New) 4.42km to the east. |
| S2539 | Cherry Cobb 7.71km to the east. |
| S2549 | Bilton 8.32km to the north. |
| S3704 | East Mount 8.59km to the north. |