Caernarvon to Holyhead
Third geodetic levelling, England & Wales.
Geodetic line G159.
Levelling Route
 |
FBM | Caernarvon. |
490.1580ft |
SH 4800 5457 |
 |
G2750 | Groeslon, Tafarn Pennionyn. |
- |
SH 4732 5595 |
 |
G2751 | N face, NE angle of outbuilding at Plas Dolydd, W side of road |
- |
SH 4754 5713 |
 |
S0354 | Llanwnda, Capel Glanrhyd. |
- |
SH 4758 5833 |
 |
G2752 | Bontnewydd. |
- |
SH 4829 5992 |
 |
G2753 | NE face, N angle of Tan Y Bryn, W side of road |
- |
SH 4835 6143 |
 |
S0353 | Stone pillar at junction of walls, W side of road, 1' N from entrance to steps |
- |
SH 4824 6225 |
 |
G2754 | NW face, 1' from N angle of GPO, Caernarvon |
- |
SH 4798 6264 |
 |
S0352 | Caernarfon, Christ Church. |
- |
SH 4809 6314 |
 |
G2755 | Waterloo Port. |
- |
SH 4902 6428 |
 |
BOLT | Waterloo Port Transfer Bolt - in concrete block 17' NE of hedge, 34' SE of sea wall, Menai Straits |
- |
SH 4872 6422 |
 |
BOLT | Barras Transfer Bolt - in concrete block in field, 3' from NE side of road, 7' SE of hedge junction |
- |
SH 4803 6555 |
 |
BOLT | OSBM Bolt in buttress of stone wall, SE side of road, 117' SW of hedge junction |
- |
SH 4807 6635 |
 |
S7597 | S face, 6' from SE angle of school |
- |
SH 4839 6705 |
 |
G4716 | NE angle of house Meas Merllyn, SE side of road |
- |
SH 4733 6684 |
 |
G4906 | SE angle of house Llys Newdd, NW side of road |
- |
SH 4570 6662 |
 |
S7596 | N angle of school, SE side of road |
- |
SH 4445 6558 |
 |
G4907 | NW face, 9' from N angle of outbuilding at Parc Farm, SE side of road |
- |
SH 4339 6524 |
 |
S7595 | N angle of chapel, SE side of road |
- |
SH 4234 6563 |
 |
BOLT | OSBM Bolt on concrete block at junction of bank & wall, E side of road |
- |
SH 4116 6745 |
 |
S7594 | S angle of chapel, NE side of road |
- |
SH 4075 6883 |
 |
S7294 | N face of Hermon TP |
- |
SH 3907 6875 |
 |
G4908 | NE angle of old school building, SE side of road junction |
- |
SH 3825 6928 |
 |
G4909 | SW angle of Meyrick Arms Hotel, NE side of road |
- |
SH 3876 7019 |
 |
G4910 | SE face, 3' from E angle of bridge abutment, NW side of road |
- |
SH 3785 7086 |
 |
G4911 | E angle of outbuilding at Bodgedwydd Farm, NW side of road |
- |
SH 3625 7149 |
 |
BOLT | OSBM Bolt on living rock, 50' SE of bridge Pont Glan Felin, W side of road |
- |
SH 3562 7008 |
 |
S7563 | N angle of school, W side of road |
- |
SH 3536 6877 |
 |
G4912 | SE angle of farm house, Merddyn Y Bit at junction of roads |
- |
SH 3494 7006 |
 |
G4913 | W face of outbuilding at Bodelwa Farm, E side of road |
- |
SH 3436 7047 |
 |
G4914 | SE angle of Tycroes Farm |
- |
SH 3494 7240 |
 |
G4915 | W face, 4' from SW angle of Yt'Nyllan Farm House |
- |
SH 3394 7293 |
 |
S7307 | Pendefig. |
- |
SH 3436 7367 |
 |
G4916 | Bryn Hyfryd. |
- |
SH 3429 7521 |
 |
G4917 | NE angle of outbuilding at Plas Llechylched Farm, W side of road |
- |
SH 3433 7673 |
 |
S7561 | Bryngwran. |
- |
SH 3499 7753 |
 |
BOLT | OSBM Bolt cemented in granite boulder, NE side of road, 200' NW from crossroads |
- |
SH 3366 7804 |
 |
G4918 | NE angle of house Gwaelod Bach, S side of road |
- |
SH 3189 7840 |
 |
BOLT | OSBM Bolt in concrete on wall junction, NE side of road |
- |
SH 3037 7869 |
 |
S7556 | S face, SE angle of St Michaels Church |
- |
SH 2929 7939 |
 |
G4943 | NE face, E angle of house Arfryn, SE side of main road |
- |
SH 2824 7859 |
 |
G4988 | N face, 10' from NE angle of outbuilding at Castell Crwban, S side of road |
- |
SH 2702 7802 |
 |
G4989 | N angle of Noddfa Chapel, SW side of road |
- |
SH 2579 7882 |
 |
S7560 | NW angle of Cliff Hotel |
- |
SH 2457 7946 |
 |
G4990 | SW face, S angle of outbuilding at Porthdafarch South, N side of road |
- |
SH 2325 8016 |
 |
G4991 | NE face, E angle of Glan Gorsgoch Isaf, NW side of road |
- |
SH 2215 8062 |
 |
BOLT | OSBM Bolt in rock outcrop, 60' W of road |
- |
SH 2164 8145 |
 |
G4992 | SW face, W angle of chapel Silon |
- |
SH 2283 8251 |
 |
S7559 | W face, SW angle of school, N side of Alderley Terrace |
- |
SH 2418 8258 |
 |
FBM | Holyhead. |
118.7661ft |
SH 2411 8282 |
This route is covered by Landranger sheets 114, 115 and 123.
(interactive map)