article: Struve Geodetic Arc
links: Tartu Pyhtää Ylitornio Odesa Oblast Tornio Kautokeino Reference ellipsoid Kiruna Norway Hammerfest Haparanda Korpilahti Jēkabpils Russian Empire Geodesy Alta, Norway World Heritage List Pajala Friedrich Georg Wilhelm von Struve Övertorneå Black Sea Union between Sweden and Norway Lapinjärvi Enontekiö