The Ordnance Survey is celebrating the 80th anniversary of a key tool in mapping the UK. We’d like to see the pictures from your successful climbs
Triangulation stations – often known as ‘trig pillars’ – atop mountains and hills around the UK are now focal points as walkers celebrate their achievements with a photo opportunity.
Around 6000 remain and while the stone blocks aren’t used officially,they are still maintained by the Ordnance Survey, which is celebrating the 8oth anniversary of the start of their role in mapping the UK.
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Source: theguardian.com