UK triangulation pillars
Bag every pillar in the UK.
Find OS trig points near you, log the ones you've found, and share the notes or photos that help the next bagger.
Active trig points on the map
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UK triangulation pillars
Find OS trig points near you, log the ones you've found, and share the notes or photos that help the next bagger.
Active trig points on the map
…
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