Triangulation Pillar 11156: Llangain 

Location
Grid reference: SN 38554 16355.
Landranger 159: Swansea & Gower, Carmarthen.
Waypoint: TP4471.
Neighbouring Triangulation Pillars
| S2386 | Llangain 0.00m to the east. |
| S2370 | Moelfre 2.99km to the west. |
| S2394 | Lan 3.85km to the southeast. |
| S2373 | Llandefeilog 4.29km to the south. |
| S2372 | Bolahaul 4.45km to the northeast. |