The Lille Raipas trig point in Alta (Norway) is one of 265 survey triangulations that stretch from Hammerfest in Norway to the Black Sea, across ten countries and over 2,820 km. Called the Struve Geodetic Arc, this was the first large-scale scientific survey to be undertaken in Europe.
The chain was established by the German-born Russian scientist Friedrich Georg Wilhelm von Struve between 1816 to 1855 and used to establish the exact size and shape of the earth.
In 2005 the survey chain (which includes the Lille Raipas trig point) was inscribed on the World Heritage List. The UNESCO listing covers ten countries – the secondmost number of countries of any UNESCO World Heritage listings (after the Ancient and Primeval Beech Forests of the Carpathians and Other Regions of Europe).
More information on Lille Raipas trig point
- Wikipedia – Struve Geodetic Arc
- Riksantikvaren – Four points on the Struve Geodetic Arc
- UNESCO – Struve Geodetic Arc