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Trawsfynydd Fundamental Bench Mark   


Location
Grid reference: SH 7066 3642.
Landranger 124: Dolgellau & Porthmadog.
Explorer OL18: Harlech, Porthmadog & Bala/Y Bala.
GPS network passive station: H1SH7036.
Waypoint: FM7226.

Neighbouring Flush Brackets
G2608 Coed Cae Du 1.31km to the north.
G2607 Fronoleu 1.52km to the south.
G2606 By Berth-ddu 2.77km to the south.
G2609 Utica 2.78km to the northwest.
G2605 Bronaber 4.07km to the south.
The nearest fundamental bench mark is Caernarvon, 29.03km to the northwest.

Third Geodetic Levelling, England & Wales (1950-68)
This fundamental bench mark was used during the Third geodetic levelling, England & Wales, and was levelled with a height of 739.8987 feet [225.5211 metres] above mean sea level (Newlyn datum). It was included on the Machynlleth to Trawsfynydd and Trawsfynydd to Caernarvon levelling lines.

Logged Visits
Visited on 9th June 2016 by Orlandos_Rat. Grid reference: SH 7066 3642. Condition: Good.
I spotted something on the car's satnav and went to investigate. I found this FBM there, hidden amongst building machinery.

Visited on 16th November 2015 by Dugswell2. Grid reference: SH 7066 3642. Condition: Good.
Found at the corner of a dry stone wall junction surrounded by rubble and junk.

Visited on 15th June 2015 by mickandkim. Grid reference: SH 7066 3642. Condition: Good.
In good order

Visited on 31st August 2012 by Griefmiester. Condition: Good.
Parked in farm enterance then quick walk along edge of dry stone wall - FBM Good condition tried from road to start to no avail.

Visited on 27th July 2012 by Dusty. Condition: Good.

Visited on 28th June 2010 by Meirion. Condition: Good.
At corner of field at Goppa farm, easy to find amongst the ferns. http://www.geograph.org.uk/photo/2876672
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