What happened: Heritage campaigners are pushing to have two concrete trig points in Northamptonshire and Cumbria granted listed status. These pillars marked the start and end of a key national surveying project that modernised mapping across Britain.
Why it matters:
- The trig points played a crucial role in creating accurate maps used nationwide.
- Listing them would protect these historic markers and recognise their contribution to British surveying heritage.
MNN Take: Trig points are small concrete pillars used by surveyors to measure land accurately. Recognising them as listed structures helps preserve important elements of the country’s mapping history.
Sources: Guardian UK