What is the name of the founder of the famous chain of survey triangulations stretching from Hammerfest to the Black Sea?
Tartu Observatory The Tartu Observatory (Estonian: "Tartu Observatoorium" ) is the largest astronomical observatory in Estonia. It is located on the Tõravere hill, about 20 km south-west of Tartu in Nõo Parish, Tartu County. The old Tartu Observatory located in Tartu city centre, is known internationally for its connection to Friedrich Georg Wilhelm von Struve and the Struve Geodetic Arc, of which it is the first reference point.
Vladimir Dal Vladimir Ivanovich Dal (alternatively transliterated as Dahl; Russian: Влади́мир Ива́нович Даль ; November 10, 1801 – September 22, 1872) was one of the greatest Russian language lexicographers. He was a founding member of the Russian Geographical Society. He knew at least six languages including Turkic and is considered to be one of the early Turkologists. During his lifetime he compiled and documented the oral history of the region that was later published in Russian and became part of modern folklore.