T:UK - Biggin Farm

OSGB36 trig archive spreadsheet - IW
Trig Name	Original Name	New Name	EASTING	NORTHING	HEIGHT	ORDER	TYPE OF MARK	Computing Date	CLASS OF LEVELLING	Date of Levelling	LEVELLING DATUM	DESTROYED MARK INDICATOR	COMMENTS
Biggin Farm	NZ42/T270	NZ42T270	420174.12	541740.89	180.500	4	BURIED BLK	01/06/1989	3	01/06/1989	N	0	GPS HEIGHT 1989
Biggin Farm	NZ42/T270	NZ42T270	420174.16	541740.97	0.000	4	BURIED BLK	01/06/1957	0			1

Selection of photos for this Concrete Ring.

By sheepsocks

By ted

As left. Ring beneath flat rock. Lots of excavation debris

By CJO

See 8 more in the album.

Logged Visits:

8th Feb 2023 10:35 by sheepsocks

FB Number: Not logged Condition: Good Score: 5/10

Slight detour on local dog walk. Someone had taken the top big stones off so it was relatively open. Covered with flat rock again.

6th Nov 2022 10:44 by peregrinus

FB Number: Not logged Condition: Good Score: 5/10

S corner of arable field in grassy margin, top slab was under grass but easily found. Another great CJO find. Easy access from W. Have seen another CR with metal rod marker, Isle of Man perhaps

2nd Jul 2021 13:15 by ted

FB Number: Not logged Condition: Good Score: 8/10

From Durham via the rail trail towards Esh Winning. Obvious hole easier to re-excavate than expected - all the hard work already done by CJO. Concrete ring with rod marker. Dry conditions so no bailing necessary, but rain approaching. Left with stone slab reinstated. Quiet views.

Biggin Farm hole of interest
Biggin Farm block
Biggin Farm site
Biggin Farm site on departure

3rd Apr 2021 10:23 by painterman61

FB Number: Not logged Condition: Good Score: 10/10

Parked at NZ 212 424 and walked along a good path SW above Rag Path Wood. Easily found but you have to lift a lot of heavy stones out of the hole. Great find Chris deepest one I've seen yet plus the only Rod type one as well. Good views but dull and cool today.

28th Mar 2021 13:51 by CJO

Gridref: NZ 20174 41744 FB Number: Not logged Condition: Good Score: 10/10

Located 74cm deep in NE corner of wall junction. 0.9m N and 1.0 m E of corner walls, slight depression visible on surface. Seemed a logical place to dig. Clear markings in concrete ring, rivet in concreted block-like base, off centre. Dug out mostly rubble and soil (unconsolidated). Back-filled with rubble and large stones. Capped with v large stone. Scored 10 for the effort required to dig this out.

As left. Ring beneath flat rock. Lots of excavation debris
Says .... Ordnance Survey Trigonometrical Station
Unusually a rod-type and not a bolt.
Clear lettering in ring.
Biggin Farm Stood in excavation. Found 74cm deep.