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TP21621 - St Helens
 
[UK map]
Grid reference :
Type :
Condition :
Good Good condition
OSGB36 Station :
SV91/4
Current use :
none
Historic use :
T:UK waypoint :
TP21621
County :
Isles of Scilly
Nearest town :
LANDS END

OSGB36 trig archive spreadsheet - IW
Trig NameOriginal NameNew NameEASTINGNORTHINGHEIGHTORDERTYPE OF MARKComputing DateCLASS OF LEVELLINGDate of LevellingLEVELLING DATUMDESTROYED MARK INDICATORCOMMENTS
St HelensSV91/4SV91S00490090.7316964.200.0002BOLT01/06/194700Bolt in rock

Nearby trigpointsplacenames 

There are 11 photos for this trigpoint (view album).

This trigpoint:
Is ranked joint 1556th with 23 other trigs (more).
Has a mean score of 6.71/10 (from 7 logged visits)
Was First logged: 21st May 2016
Was Last logged: 5th Jul 2022

Of the 7 logged visits,
2 recorded a location and of these....

All were within 4m
The average error was 3m
The closest was 3m

[map]
[key]
Watch Hill (Bryher) Watch Hill (Bryher) Beacon Hill (Tresco) Beacon Hill (Tresco) jonglew jonglew CJO CJO St Helens St Helens [Zoom In/Out] [Hide Labels]

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Selection of photos for this Bolt.


By CJO

By CJO
Bolt - Location with respect to summit cairn
©jonglew
Bolt - Detail
©jonglew
See 7 more in the album.

Logged Visits:

Good condition 5th Jul 2022  11:16  by CJO

Gridref: SV 90087 16965   FB Number: Not logged  Condition: Good  Score: 5/10

In grassy depression just south of summit. Jon and myself dig the turf away and there it was. Three witness rivets also found.

Bolt
Close up
witness 1
witness 2
witness 3


Good condition 5th Jul 2022  11:10  by jonglew

Gridref: SV 90086 16963   FB Number: Not logged  Condition: Good  Score: 7/10

Large bolt, ~2.5" dia, found in a grassy depression ~3m S of the summit rock. Dug out by Chris and I. Unsure if it's installed in concrete or rock as insufficient turf surrounding it was cut away. 3 witness rivets located on nearby outcrops.

Bolt - Location with respect to summit cairn TP21621©jonglew
Bolt TP21621©jonglew
Bolt - Detail TP21621©jonglew


Inaccessible 20th Oct 2018  19:48  by Ant1974

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


Good condition 3rd Jul 2016  15:54  by Chalky

FB Number: Not logged  Condition: Good  Score: 9/10


Good condition 2nd Jul 2016  14:15  by dugswell2

FB Number: Not logged  Condition: Good  Score: 9/10

OS bolt found with RHW under turf in a depression near summit.


Good condition 2nd Jul 2016  14:02  by peregrinus

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

2.5" bolt in block in depression 3m south of highest grassy rock. was covered in turf, left open. fine views of Round Island, Men-a-Vaur stacks and Scilly archipelago. Group charter with Martin Jenkins. Landed S side, path from old quarantine building heads R round coast then up to summit.


Inaccessible 21st May 2016  19:30  by JonT

FB Number: Not logged  Condition: Inaccessible  Score: 7/10

It is possible to land on St Helen’s, though it would probably mean hiring a boat. Bennett Boatyard is based at Green Bay on Bryher, but has hire points on St Martin’s and can deliver to Tresco by arrangement (see http://www.bennettboatyard.com/boat-hire-scilly.html). Perhaps next time I visit Scilly I’ll hire a boat and visit this trig point. Until then, St Helen’s is easily seen from both Tresco and St Matin’s.

General view of St Helen’s from Tresco at low tide ©JonT
General view of St Helen’s from Tresco at high tide The lighthouse is not on St Helen’s, but on Round Island, north of St Helen’s ©JonT
View of summit on St Helens, with the Pest House below The Pest House was a C18th isolation hospital ©JonT



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