Struve Geodetic Arc *(Latvia)

A unique UNESCO Heritage site
Jēkabpils in Latvia 🇱🇻

Struve Geodetic Arc
2,800 km across 10 countries
34 stations

Great scientific triangulation survey done 200 years ago to determine shape of earth & linked to theory that earth is flatter along poleshttps://t.co/6E1ZY7tBUI pic.twitter.com/Bc1GM06n97

— Tanmaya Lal (@Tanmaya_Lal) October 5, 2023